U-336S Users Manual

Version 2.0 (Mar. 1997)

ACCESSING INTERNET & INTRANET

ZyXEL Limited Warranty

ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or workmanship for a period of up to two (2) years from the date of purchase. During the warranty period, and upon proof of purchase, should the product have indications of failure due to faulty workmanship and/or materials, ZyXEL will, at its discretion, repair or replace the defective products or components without charge for either parts or labor, and to whatever extent it shall deem necessary to restore the product or components to proper operating condition. Any replacement will consist of a new or re-manufactured functionally equivalent product of equal value, and will be solely at the discretion of ZyXEL. This warranty shall not apply if the product is modified, misused, tampered with, damaged by an act of God, or subjected to abnormal working conditions. Note: Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This warranty is in lieu of all other warranties, express or implied, including any implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for indirect or consequential damages of any kind or character to the purchaser. To obtain the services of this warranty, please contact ZyXELs Service Center, refer to the separate Warranty Card for your Return Material Authorization number (RMA). Products must be returned Postage Prepaid. It is recommended that the unit be insured when shipped. Any returned products without proof of purchase or those with an out-dated warranty will be repaired or replaced (at the discretion of ZyXEL) and the customer will be billed for parts and labor. All repaired or replaced products will be shipped by ZyXEL to the corresponding return address, Postage Paid (USA and territories only). If the customer desires some other return destination beyond the U.S. borders, the customer shall bear the cost of the return shipment. This warranty gives you specific legal ii
rights, and you may also have other rights which vary from state to state. Copyright 1997 by ZyXEL The contents of this book may not be reproduced (in any part or as a whole) or transmitted in any form or by any means without the written permission of the publisher. Published by ZyXEL Communications Corporation. All rights reserved. Note: ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patents rights of others. ZyXEL further reserves the right to make changes in any products described herein without notice. This document is subject to change without notice. Acknowledgments Trademarks mentioned in this manual are used for informational purposes only. Trademarks are properties of their respective owners.

FCC Part 15 Information

This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference. 2. This device must accept any interference received, including interference that may cause undesired operations. This equipment has been tested and found to comply with the limits for a CLASS B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy, and if not iii

installed and used in accordance with the instructions, may cause harmful interference to radio communications. If this equipment does cause harmful interference to radio/television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and the receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. Shielded RS-232 cables are required to be used to ensure compliance with FCC Part 15, and it is the responsibility of the user to provide and use shielded RS-232 cables.
Information for Canadian Users
The Industry Canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operation, and safety requirements. The Industry Canada does not guarantee that the equipment will operate to a users satisfaction. Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the iv
companys inside wiring associated with a single line individual service may be extended by means of a certified connector assembly. The customer should be aware that the compliance with the above conditions may not prevent degradation of service in some situations. Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment. For their own protection, users should ensure that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas. Caution: Users should not attempt to make such connections themselves, but should contact the appropriate electrical inspection authority, or electrician, as appropriate. This digital apparatus does not exceed the class B limits for radio noise emissions from digital apparatus set out in the radio interference regulations of Industry Canada. The declarations of CE marking:

2 Installation 7

Front Panel 7
Front Panel LEDs 7 Front Panel Switches 8 Rear Panel Markings 8
Modem Connection 10 Powering Up 10
3 Basic Modem Operation 13
Understanding AT Commands 13
Using the Windows 95 Hyper Terminal Program 13
Dialing and Answering Techniques 15
Dialing using the ATD Command 15 Auto-Answer and Hook Controls 16
Making Your First Connection 16 Quick Tips when issuing AT Commands 17
Modem Result Codes 19 Viewing S Register Values 20 Changing S Register Values 20

Non-Volatile Memory 21

Storing Phone Numbers 21 Dialing Stored Phone Numbers 21 Saving Settings and User Profiles 22
Helpful Hints for PC Computers 22
Default Modem Settings for PCs 23 ZyXEL Serial/Parallel I/O Card 23
Helpful Hints for Mac Computers 24
Special AT Command Settings for Mac 24 Mac Serial Port 24 Mac Software Tips 24
Helpful Hints for UNIX-Based Computers 25
Serial Cable 25 Basic Modem Settings for UNIX 25 Unix Software Tips 26

4 LCD Panel Operation 27

LCD Panel 27 Panel Operation 28
Menu Tree 29 LED Status Screen 29 Double Arrows on The Screen 29

Dialing 30

Dial Memory 30 Storing a Number 31 ix
Dialing a Number 32 Manual Dial 32 Repeat Last Dial 33 Auto Answer 34
Dialing Messages 34 Panel Lock 37 V.25bis Command Set 38 Clock Options 39 RTS Options 40 Command State Options 40 Dialing from Synchronous Mode 41 Answering from Synchronous Mode 42
Auto-Answer 42 Manual Answer 42
5 Leased Line Operation 43
Connecting to a Leased Line 43
Line Type Setting 43 Power Level Setting 43
Leased Line Handshaking 44
Manual Connect 44 Auto Handshake 44
Leased-Line Dial Backup 45
Dial Backup 45 Aborting from Leased-Line Operation 46
Terminating a Leased Line Connection 46

6 Special Functions 47

Security Functions 47
Levels of Security 47 User Passwords 48

Remote Configuration 50

Caller Number Delivery (Caller ID) 51 Distinctive Ring 54 Extended Distinctive Ring (EDR) 56
Setting Up EDR 57 EDR Application Example 58

7 Fax Operation 61

Fax Basics 61 Modem as Fax Machine 62
ITU-T T.30 Fax Protocol 62

Fax Command sets 63

Defining the Fax Command Sets 63 Class 1 Command Set 64 Class 2 Command Set 65 Class 2.0 Command Set 71 Extended Fax AT Command Set 79 Flow Control 83
Fax Reception from a BBS 84
8 AT Command Set Summaries 87

Basic AT Command Set 87

Description of ATI2 Output: 91
Extended AT& Command Set 93 Extended AT* Command Set 100

9 Status Registers & Result Codes 104
S-Register Descriptions 104
Basic S-Registers "ATSn=x" 104 Extended S-Registers "ATSn=x" 105

Result Code Options 122

"ATXn" Result Code Option Table 122
Result Code Field Descriptions 125 Connect Strings for Error Corrected Connections 125
10 Diagnostics & Troubleshooting 128

Diagnostics 128

Power-On Self Test 128 Resetting The Modem 129 Loopback Tests 130 Indicator Lights 132 Line Condition Status Display 132

Trouble Shooting 134

AT Command Set Problems 135 Command Echo Problems 136 Answer Problems 137 Dialing Problems 138 Data Transfer Problems 138 Connection Problems 139
11 Upgrading Your Modem 140
Upgrading by Flash EPROM 140 Kernel Recovery Mode 141

12 Connector Pinouts 142

Phone Jack Pinouts 142 PC Serial Port Pinouts 143 Macintosh Serial Port Pinouts 144

13 Index 146

Introduction
Congratulations on the purchase of your U-336S modem - one of ZyXEL's premier high-performance products. The U-336S modem is world renown for its ability to maintain ultra high speeds and clear, quality connections while communicating around the globe. If you do not find information on a specific topic, or if you would like more information about a topic covered in your User's Manual, please call ZyXEL Technical Support at 714-693-0808. Other means of contacting ZyXEL are listed in the Contacting ZyXEL section.

Unpacking Your Modem

Enclosed Equipment
Before you proceed further, please check all items you received with your modem against this list to make sure nothing is missing. The complete package should include: One U-336S universal modem. One AC power adapter (external model). One RJ-11 modular telephone cable. One warranty/registration card. This Users Manual.

Introduction 1

Contact your dealer or the store where you bought the modem if anything is missing. Check the modem for shipping damages. If you find any damage, contact the shipping agency immediately. Retain shipping and cushioning materials for future storage or shipping needs. Please direct any additional questions about damaged or missing materials to your dealer or distributor, or contact ZyXEL customer service using the information on page vi.

Basic Modem Operation
This chapter covers the basic commands and techniques involved in modem operation. In many cases, this is the only information you will need in order to get up and running with communication software, and to start making connections with your modem.
Understanding AT Commands
The U-336S communicates asynchronously with computers using AT commands. AT commands are used to configure and control your modem. Commands are usually sent to the modem by way of communication software, but can also be entered manually by the user with the computer keyboard. Command statements must be written in a specific form in order for your modem to recognize them. A command statement always begins with the letters AT or at. It is then followed by one or more commands and the <Enter> key. AT commands can only be issued when your modem is in command mode or off-line. Once your modem has established a connection with another modem it is said to be on-line or in data mode. In this mode, the characters sent to your modem by your computer are transmitted to the remote modem rather than being interpreted by your modem as commands.
Using the Windows 95 Hyper Terminal Program
In order to issue an AT command statement, you first need to run a communication program such as the Microsoft Windows Hyper Basic Modem Operation 13
Terminal program. This program provides a simple method to manually enter AT commands so you can do such things as customize the settings of your modem, or store commonly used phone numbers. Once your modem is connected to your computers serial port and telephone line, open the Windows 95 Accessories program group, and open the Hyper Terminal Program. The program will prompt you for a name and Icon to use for your new connection. Type the name Test Connection and press <Enter>. Next, you will be prompted for country information, area code and phone number, and the device used to make the connection. For this test purpose, do not enter a phone number; simply choose the COM port your modem is connected to from the Connect Using list. Click OK when finished. The next window sets the COM port settings. The settings used for your modem should be as follows: Bits per second: Data bits: Parity: Stop bits: Flow Control: None 1 Hardware

Storing Phone Numbers

The AT command to store a phone number is in the format AT&Zs=n. The s is a number from 0 to 49 that represents the location in memory that the phone number is to be stored, and the n is the phone number itself. Example: To store the number 1-714-555-1212 in memory location 2, type: AT&Z2=17145551212<Enter> You can store up to 50 telephone numbers.
Dialing Stored Phone Numbers
The AT command syntax used to dial a stored number is ATDS=n. The n is the memory location of the stored number you want to dial. O NOTE: AS A GENERAL RULE, WHEN A LETTER IN AN AT COMMAND DEFINITION IS SHOWN IN ITALIC TYPE, THE LETTER IS NOT TO BE ENTERED AS PART OF THE COMMAND, BUT RATHER IS REPRESENTATIVE OF A NUMBER OR STRING EXPECTED AS INPUT. FOR EXAMPLE: THE LETTER S IN THE ATDS=N COMMAND IS ACTUALLY TYPED, UNLIKE THE S IN THE AT&ZS=N COMMAND WHICH REPRESENTS A NUMBER.

Basic Modem Operation 21

Saving Settings and User Profiles
There are some cases where you may wish to save the settings you have made as the default settings that are recalled when your modem is powered up. The AT&WZ command selects the current settings as the power-on profile. There are four profiles that can be changed by the user, and one factory default profile. The following table lists the syntax for the commands involved in storing, recalling, and viewing profile settings: AT&Vn AT&Wn ATZn Views the settings in profile (n-1); n=0 to 5; n=0 views current settings. Stores the current settings in user profile n; n=0 to 3. Resets the current settings with the settings in profile n, n=0 to 4.
Profiles 0 to 3: User profiles. Profile 4: Factory default profile.
Helpful Hints for PC Computers
Most PCs are equipped with more than one serial port. Standard cables are readily available from many suppliers. Usually, serial ports are manufactured in two forms, either with a 25-pin male jack or a 9-pin male jack. For high speed serial connections at 230.4Kbps or 460.8Kbps, use a low-capacitance cable. Also, keep the cable as short as possible. The serial port is driven by interrupts. Every interrupt needs a certain amount of overhead processing time. Too many interrupts reduce the computer's efficiency. The UART 16450 is very commonly used in serial port devices. For every character (byte) received, it generates an interrupt. If your hardware allows it and if

22 Basic Modem Operation

your software supports it, replace the 16450 UART with a 16550 model. This newer chip has an internal buffer and generates an interrupt for up to every 16 characters (several trigger levels are available). With this UART installed, you may drive your serial port at 57600 bps and above. While data is written from the transfer-buffer to your hard-disk, characters may be lost at the serial port. This is due to the fact that disk-access interrupts have a higher priority than serial port interrupts. If you are running at a high serial speed, e.g. 230.4Kbps or 460.8Kbps, on your PC, be sure to enable the disk cache by including SMARTDRV execution in your AUTOEXEC batch file.

Class 2 Command Set

The following Class 2 commands are supported and implemented per TIA PN2388 (8/20/90): Command Syntax +<command>=<value> +<command>=? +<command>? Description Execute a command or set a parameter. Read permissible settings. Read current setting.
Supported Commands (per TIA PN2388 8/20/90)

Command +FAA=n

Value Description Auto-answer mode parameter: n=0 Answer as set by +FCLASS.

Fax Operation 65

Command

+FBADLIN= <value>

+FBOR=n

+FBUF?

+FCIG="string" +FCLASS=n

+FCON +FCQ=n

+FCR=n
Value Description n=1 DCE answers and auto-determines type. 0-255 Bad line threshold (number of consecutive bad lines for a bad page parameter): Determine if Copy Quality OK on the T.30 flow chart. <value>=0 to 255; a value of 0 implies that error checking is disabled. Phase C data bit order: n=0 Select direct bit order. n=1 Select reversed bit order in receiving mode for phase C data. Buffer size; read only parameter: Allow DTE to determine the characteristics of the DCEs buffer size. Local fax station ID string, for polling Rx. Service class selection: Refer to +FCLASS Class 1 command in previous section. DCE responds fax connection. Copy quality check capability parameter n=0 No copy quality check capability. n=1 Only check 1D phase C data. n=2 Check both 1D and 2D phase C data. "Capability to receive" parameter n=0 DCE will not receive message data or poll a remote device. n=1 DCE receives message data or polls a

66 Fax Operation

Value Description remote device. +FDCC=vr,br,wd DCE capabilities parameters. ,ln,df,ec,bf,st vr=0 Vertical resolution: Normal; 98 lpi. vr=1 Vertical resolution: Fine; 196 lpi. br=0 Bit rate: 2400 bit/s; V.27ter. br=1 Bit rate: 4800 bit/s; V.27ter. br=2 Bit rate: 7200 bit/s; V.29 or V.17. br=3 Bit rate: 9600 bit/s; V.29 or V.17. br=4 Bit rate: 12000 bit/s; V.17. br=5 Bit rate: 14400 bit/s; V.17. wd=0 Page width: 1728 pixels in 215mm. wd=1 Page width: 2048 pixels in 255mm. wd=2 Page width: 2432 pixels in 303mm. ln=0 Page length: A4; 297mm. ln=1 Page length: B4; 364mm. ln=2 Page length: unlimited length. df=0 Data compression format: 1-D; modified Huffman. df=1 Data compression format: 2-D; modified Read. ec=0 Error correction disabled. ec=1 Enable error correction mode. bf=0 Disable binary file transfer. st=0 Minimum scan time/line: 0 ms. st=1 Minimum scan time/line: 5 ms. st=2 Minimum scan time/line:10 ms (normal); 5 ms (fine). st=3 Minimum scan time/line:10 ms. st=4 Minimum scan time/line:20 ms (normal); 10ms (fine). st=5 Minimum scan time/line:20 ms. Fax Operation 67

Response

Value Function and Description n=70 Receive error on phase B hang up code. n=90 Receive error on phase C hang up code. n=100 Receive error on phase D hang up code. +FNSC:"HEX string" Report the non-standard facilities command frame. +FNSF:"HEX string" Report the non-standard facilities frame response. +FNSS:"HEX string" Report the non-standard setup frame response. +FPOLL Remote polling indication. +FPTS:n Receive page transfer status response; refer to +FPTS=n command. +FTSI:"string" Report remote ID response TSI. +FVOICE Transition to Voice response.

Class 2 Flow Control

Flow control is necessary to match the DTE-DCE data rate to the line signaling rate while transmitting or receiving Group 3 (T.4) data. In Class 2 fax mode, both hardware (RTS/CTS) and software (XON/XOFF) flow control are enabled.

Class 2.0 Command Set

Command Syntax +<command>=<value> +<command>=? +<command>? Description Execute a command or set a parameter. Read permissible settings. Read the current setting.

Fax Operation 71

Supported Commands
Value Description Auto-answer mode parameter: n=0 DCE answers as set by +FCLASS. n=1 DCE answers and auto-determines call type. +FBO=n Phase C data bit order: n=0 Select direct bit order. n=1 Select reversed bit order in receiving mode for phase C data. +FBS? Buffer size parameter; read only. +FCC=vr,br,wd, DCE capability parameter. Refer to ln,df,ec,bf,st +FDCC command in Class 2 for parameter settings. +FCLASS=n Service class selection. Refer to +FCLASS Class 1 command in previous section. +FCO DCE response fax connection made. +FCQ=<rq>,<t Copy quality check capability parameter q> rq=0 DCE Receive Copy Quality Checking disabled. rq=1 DCE Receive Copy Quality Checking enabled. rq=2 DCE Receive Copy Quality Correction enabled. tq=0 DCE Transmit Copy Quality Checking disabled. tq=1 DCE Transmit Copy Quality Checking enabled. tq=2 DCE Transmit Copy Quality Correction enabled.

72 Fax Operation

Command +FCR=n
Value Description "Capability to receive" parameter n=0 DCE will not receive message or poll a remote device. n=1 DCE receives message data or polls a remote device +FCT=n 0-255 DTE phase C time-out parameter. n=0255, 1s units. +FDR Receive phase C data command initiates document reception +FDT Transmit phase C data command: releases the DCE to proceed with negotiation +FEA=n Phase C received EOL alignment parameter n=0 Determine that T.4 EOL patterns are bit aligned (as received). n=1 Determine that the last received bits of T.4 EOL patterns are byte aligned by the DCE, with necessary zero fill bits inserted. +FIE=n Procedure interrupt parameter n=0 Procedure interrupt requests from the remote station are ignored, and not reported to the DTE. n=1 Procedure interrupt requests from the remote station are accepted, negotiated and reported using the +FVO response. +FIP Initialize facsimile parameters to factory default. +FIS=vr,br,wd,l Current session parameter. refer to n,df,ec,bf,st +FDCC Class 2 command in previous section parameter settings.

Command bit dec hex Function and description Ref. Answer mode 0 Grant Remote Digital Loop- &T4 back test request Deny Remote Digital Loop&T5 back test 3,0 Dial-up line (Default) &L4 2-wire leased line &L8 4-wire leased line &L2 5,0 Internal clock (Default) &X10 External clock &X20 Remote clock &X2 7,0 Asynchronous data with &M0 buffering (Default) Asynchronous command, &M1 synchronous data Direct asynchronous, no data &M2 buffering 192 C0 Synchronous &M3 S15= bit dec hex Bit-mapped register +130 0,0 Even parity Odd parity * No parity 0 * 1 stop bit 2 stop bits 4,0 * 10 bit character length *Cbit character length *Cbit character length *Cbit character length *C3 7-0 Profile 0 as active settings after Z0 power on Profile 1 as active settings after Z1 power on 106 Status Registers & Result Codes
Command bit dec hex Function and description Ref. Profile 2 as active settings after Z2 power on Profile 3 as active settings after Z3 power on * Factory default as active Z4 settings after power on S16= dec hex Test status register +0 No test in progress &T1 Loop-back test in progress &T3 Local Digital Loop-back test in &T3 process Remote Digital Loop-back test &T6 in process Remote Digital Loop-back &T7 with self-test in process Analog Loop-back with self &T8 test in progress S17= bit dec hex Bit-mapped register +Disable secondary channel *S0 (default) 4-1 0-30 0-1E Set leased line transmit power *Pn level from 0 to -15 dBm. (See also S35b3) (Default *P9) 0 Normal dial (Default) D Reverse dial, go on-line in DR answer mode. 7,0 AT Commands set (Default) *I40 V.25bis command set *I80 Dumb mode (no command *I2 accepted) S18= dec hex Force modem to fix baud rate +000 when answering
Status Registers & Result Codes 107
Command bit dec hex Function and description 0 * 0 Disable fixed baud function 1-46 1-2E Enable baud rate to be fixed when answering. Baud rate value settings (n) the same as S20 S19= dec hex Modem connection mode, same 0-73 0-49 setting value as 'AT&Nn' command S20= dec hex DTE speed (bps). Auto detected from AT Command 230400 bps 115200 bps (Default) 76800 bps 57600 bps 38400 bps 19200 bps 16800 bps 14400 bps 12000 bps 9600 bps 10 A 7200 bps 11 B 4800 bps 12 C 2400 bps 13 D 1200 bps 14 E 460800 bps 15 F 300 bps 307200 bps 153600 bps 102400 bps 61440 bps 51200 bps 108 Status Registers & Result Codes

Bit dec hex +nnn Note:

S-register bit number, 'b', used in 'ATSr.b=n' and 'ATSr.b=?' Decimal value, 'x', used in 'ATSn=x' Equivalent Hexadecimal value. Factory default when listed in 'Reference' column. 'AT' is omitted when an AT command is referred to in the 'Reference' column.

Result Code Options

"ATXn" Result Code Option Table
The following table shows the different options available when setting the ATXn command. 122 Status Registers & Result Codes
The default value for n is 5 when your modem is shipped. ATV30 ATV1 OK CONNECT RING ** NO CARRIER ERROR CONNECT 1200 NO DIAL TONE BUSY NO ANSWER RINGING* CONNECT 2400 CONNECT 4800 CONNECT 9600 CONNECT 19200 CONNECT 7200 CONNECT 12000 CONNECT 14400 CONNECT 16800 CONNECT 38400 CONNECT 57600 CONNECT 76800 CONNECT 115200 CONNECT 230400 CONNECT 460800 CONNECT 921600 CONNECT 307200 CONNECT 153600 CONNECT 102400 CONNECT 61440 CONNECT 51200 X0 X1 X2 X3 X4 X5 X6 V V V V V V V V V V V V @ $ V V V V V V V V V V V V V V V V V V V V V % % % % @ $ V V V V V V V V V V V V V V V V % % % % @ $ % % % % @ $ % % % % @ $ % % % % @ $ % % % % @ $ % % % % @ $ % % % % @ $ % % % % @ $ % % % % @ % % % % @ % % % % @ % % % % @ % % % % @ % % % % @ % % % % @ % % % % @ % % % % @ % % % % @ % % % % @ % % % % @ X7 V # V V V # V V V V # # # # # # # #
Status Registers & Result Codes 123
ATV0 ATV1 X0 X1 X2 X3 X4 X5 XCONNECT 624000 % % % % @ 32 CONNECT 124800 % % % % @ 33 CONNECT 62400 % % % % @ 34 CONNECT 41600 % % % % @ 35 CONNECT 31200 % % % % @ $ 36 CONNECT 24960 % % % % @ 37 CONNECT 20800 % % % % @ 38 CONNECT 33600 % % % % @ $ 39 CONNECT 28800 % % % % @ $ 40 CONNECT 26400 % % % % @ $ 41 CONNECT 24000 % % % % @ $ 42 CONNECT 21600 % % % % @ $ * Use S42.6 to disable 'RINGING' result code ** When more than one type of Distinctive Ring is turned on (S40b3-6) RING n will be reported, n=Ring Type # (1-4)
Result Code Chart Symbol Reference:

# # # # #

Supported Reports the DTE Speed as: <cr><lf>CONNECT DTE_Speed<cr><lf> CONNECT DTE_Speed/Protocol DCE_Speed/Error_Control Example: CONNECT 38400/V.32bis 14400/V.42bis <cr><lf>CONNECT DCE_Speed[/Error_Code]<cr><lf> Example: CONNECT 14400/ARQ CONNECT DCE _Speed/Error_Code/Error_Control Example: CONNECT 14400/ARQ/ MNP5 Data compression included. 'SREJ' is appended if a V.42 connection with selective reject is established.
124 Status Registers & Result Codes
Result Code Field Descriptions
Field Name Error_Code Error_Control Possible Values NONE, ARQ LAPM, V42 (This field will not show if no error control is negotiated) Data_Compressi V42b on DCE_Speed All possible DCE speeds supported DTE_Speed All possible DTE speeds supported
Connect Strings for Error Corrected Connections
To enable the following numerical (ATV0) and verbose (ATV1) result codes when an error corrected connection is made, set S35 bit 7 to 1.(ATS35.7=1)

Diagnostics & Troubleshooting 131

Indicator Lights

Retransmission Indicator
In the error control mode, an error occurring in the link will cause the data to be re-transmitted. At the same time, the AA LED will flash. This also indicates the quality of the line.

Dialing Indicator

The V34 LED will flash on and off for 1/2 second each to indicate that the modem is dialing. This flash will continue after dialing until a carrier is detected. Therefore, the V34 LED will also flash in leased-line modem connections when one modem is trying to handshake but the other modem is not turned on.
Handshaking And Retrain Indicator
The V34 LED and V32b LED will alternatively flash on and off for 1/2 second each to indicate that the modem is handshaking or retraining.
Line Condition Status Display
Regarding data being transmitted over telephone line circuits, there are many kinds of line impairments that can affect the data being received by the remote modem. Your modem can measure four major line impairments. From the impairment readings, you can understand the current line condition. Your modem also logs line events over a long period, so you know what the line condition has been. We will describe these readings and logs as follows: O NOTE: THE READINGS DISPLAYED ARE NOT MEASUREMENTS AND SHOULD ONLY BE USED AS A REFERENCE.
Signal to Noise Ratio (S/N)
This reading is expressed in 0.1 dB resolution. The higher the speed, the higher the S/N ratio required. The modem measures the S/N ratio by measuring the distance between the demodulated 132 Diagnostics & Troubleshooting
signal point and the ideal signal point. For V.32/V.32bis, the modem-measured S/N ratio is generally about 2 dB higher than what is actually on the line because the modem rejects some of the out-of-band noise. For V.22/22bis, the difference can be as high as 8 dB because the modem only uses part of the 3 KHz bandwidth and rejects more than half of the voice band noise.
Received Signal Power Level (RX)
This reading is expressed in 0.1 dBm resolution. The modem measured receiving signal power is generally within 1-2 dBm of the actual value with relative accuracy. The receiver sensitivity specification for your modem is -43 dBm. Strong signal power could cause signal saturation in the channel and degrade the data validity. To avoid this situation, decrease the transmission power of the remote modem. For increased line operability, your modems transmission power level on a leased-line operation could be adjusted from 0 dBm to -27 dBm. The default value is -9 dBm.

A 4-wire leased line connection uses pins 1 and 2 for transmission and pins 7 and 8 for reception. 2-wire leased line connections use pins 1 and 2 for both transmission and reception. Close to the leased line jack on the circuit board are four jumper positions. 142 Connector Pinouts
When they are closed, pins 1 and 2 will connect to pins 4 and 5 as will pins 7 and 8 to pins 3 and 6. The result is an RJ-45 type signal connection on the central four pins. Note that the other four pins still have the same signals connected and thus do not conform to RJ-45.

PC Serial Port Pinouts

Signal Pin 15 ITU-TSS EIA Signal Signal Name Name 101 AA BA BB CA CB CC AB CF DB Pin/Signal Description Protective Ground (GND). Transmitted Data(TXD). Received Data(RXD). Request To Send (RTS). Clear To Send (CTS). Data Set Ready (DSR). Signal Ground (GND). Data Carrier Detected (DCD). Transmit Clock Signal (source: DCE). Synchronous Receive Clock. Local Analog Direction DTE-DCE

115 141

Connector Pinouts 143

Signal Pin

ITU-TSS EIA Signal Signal Name Name 108/2 108/CE DA CD
Pin/Signal Description Loopback Test. Data Terminal Ready (DTR). Connect DCE to line Remote Digital Loop Test. Ring Indicator(RI). Transmit Clock Signal (source: DTE). Test Indicator.

Direction DTE-DCE

Macintosh Serial Port Pinouts
The following table shows the wiring of a modem Macintosh hardware handshaking cable: Mac Din 8 Modem DB & 7 Description DTR to RTS and DTR, Hardware Handshaking Out CTS to CTS, Hardware Handshaking In TX- to TXD, Data sent GND, Ground RX- to RXD, Data received not connected GPI to CD, Carrier detected GND, Ground, needed for RS-232 connections

144 Connector Pinouts

Connector Pinouts 145
AT commands, 5, 13, 14, 15, 17, 19, 21, 27, 41, 48, 61, 79, 83, 131, 136, 142 Combining, 17 Quick Tips, 17 ATI2 Output, 91 Auto-Answer, 8, 16, 34, 42 Caller ID, 4, 51, 52, 54, 58, 102 Command Characters, 15, 23 Command State Options, 40 Contacting ZyXEL, vi Data State Screens, 35 DATA/VOICE Switching, 32 DEFAULT DIAL menu, 31 Dial Memory, 30 Dialing a Number, 32 Dialing from Synchronous Mode, 41 Dialing Messages, 34 Dialing using ATD Commands, 15 Distinctive Ring, 4, 54, 55, 56, 125 Extended, 56 Echo feature, 18, 26, 88, 111, 137, 138 EDR Application, 58 Error messages, 130 Factory default profile, 22 Fax Command sets, 63, 79 Flow Control, 83 Fax Compatibility, 5 Fax Operation Basics, 61 ITU-T T.30 fax protocol, 62 Using Modem as Fax, 62 Fax Reception from a BBS, 84 Fax Standards, 63 Features, 3 Flash EPROM, 4, 90, 141 Upgrading, 141 Handshaking, 133, 145 Hyper Terminal, 14, 17 Idle Screen state, 27 Indicator Lights, 133 Kernel Recovery, 142 LCD display, 3, 7, 10, 27, 31, 33, 35 Leased Line Handshaking, 44 Auto, 44 Manual Connect, 44 Leased Line Operation Terminating a Connection, 46 Leased-Line Dial Backup, 45 Leased-Line Operation Aborting, 46 LED Status Screen, 29 LEDs, 7, 138 Line Condition Status Display, 133 Loopback Tests, 131 Macintosh Computers, 3, 24, 25, 145 Serial Port, 25 Software tips, 25 Macintosh Serial Port Pinouts, 145 Manual Dial, 32 Menu tree, 8, 27, 28, 29 Microsoft Windows, 14 Modem operation, 13

146 Index

Non-Volatile Memory, 21 On-screen buttons, 28 Packing List, 1 Panel Lock, 38 PC Serial Port Pinouts, 144 Phone Jack Pinouts, 143 Phone Numbers, 21 Dialing stored, 21 Storage, 21 power adapter, 10 Power Level Setting, 44 Powering Up, 10 Product registration, 2 Rear Panel Markings, 8 Redial operation, 34 Remote Configuration, 50 Required Equipment, 2 Resetting The Modem, 130 Result Code Options "ATXn", 124 Result codes, 18, 19, 20, 61, 79, 83, 115, 126, 137, 138 RTS options, 40 Saving Settings, 22 Security, 4, 47, 48, 49, 100, 101, 116 Functions, 47
Levels, 47 User Passwords, 48 SMARTDRV, 23 S-register, 20, 21, 38, 42, 46, 55, 57, 90, 105, 124 Storing a Number, 31 Synchronous operation, 38 Auto-Answer, 42 Technical Specifications, 5 Testing your modem, 17 Timing clock, 39 Trouble Shooting Answer Problems, 138 AT Command Set Problems, 136 Command Echo Problems, 137 Connection Problems, 140 Data Transfer Problems, 139 Dialing Problems, 139 UART 16450, 23 UNIX, 3, 26, 116 Serial cable, 26 Software tips, 26 User Profiles, 22 V.25bis, 3, 38, 41, 101, 108 ZyXEL Serial/Parallel I/O Card, 24

Index 147

Contacting ZyXEL

If you have questions about your ZyXEL product or desire assistance, contact ZyXEL Communications Corporation in one of the following ways: Phone: In North America call between 8:00 AM and 5:00 PM PST at (714) 693-0808 Outside North America, you can dial +886-3-5783942 EXT 252 between 8:00AM and 5:00PM Taiwan time (GMT +8:00). Fax: ZyXEL in North America: (714) 693-8811 or Taiwan: +886-3-5782439 E-mail: Sales inquiries: sales@zyxel.com in North America. sales@zyxel.hinet.net outside North America. Technical support: support@zyxel.com in North America. support@zyxel.hinet.net outside North America. Product information: Visit our site on the World Wide Web: http://www.zyxel.com.
FTP: Information , such as ZyXEL software and ROM updates for North America can be found at this FTP address: ftp.zyxel.com For European versions and related files, use the address: ftp.zyxel.co.at
Postal Service: You can send written communications at the following address: ZyXEL Communications Corporation 6, Innovation Road II, Science-Based Industrial Park Hsinchu, Taiwan 300, R.O.C. or ZyXEL Communications Inc. 4920 E. La Palma Avenue Anaheim, CA92807, U.S.A.

Contents

ZyXEL Limited Warranty FCC Part 15 Information Information for Canadian Users The declarations of CE marking: Contacting ZyXEL ii iii iv v vi

1 Introduction

Unpacking Your Elite 2864I Becoming a Registered Owner

2 Installation

Connecting Your Elite 2864I to the Power Supply Connecting the Elite 2864I to Your Computer Connecting the Elite 2864I to Your ISDN Line S/T Interface Model U Interface Model Power On and Self Diagnostics Elite 2864I Front Panel LED Indicators: Front Panel Switches Understanding AT Commands Supported AT Command Types Quick Tips When Issuing AT Commands
3 Configuring Your ISDN Line and Network 15
ZyXEL Internet Configuration Software Configuring Your Modem Using a Terminal Program Testing Your Connection 18
4 Windows 95 and NT Setup
Installing the Windows 95 Driver (INF file) viii
Configuring Windows 95 Dial-Up Networking Configuring Windows NT 4.0 Dial-Up Networking CAPI Installation
5 ISDN Communication Basics
Outgoing Calls Dialing Out Using ISDN Mode Dialing Out for Analog Adapter Port Dialing out for Internal Fax/modem Manually Switching Communication Modes Placing the Call Incoming Calls Digital Data Determining the Packet Length Answering a Call Using MSN Best-effort call answering Ambiguity resolution switch for voice calls Multi auto-answering of data calls
6 Async to Sync PPP and SLIP
Making Async to Sync PPP and SLIP Calls Keeping a Line Connected During Idle Time Answering Async to Sync PPP calls Multilink PPP Making a Call Using Multilink PPP Dialing Pre-stored Phone Numbers Bandwidth Allocation Protocol (BACP/BAP) Endpoint Discriminator Call Bumping STAC LZS Compression

Elite 2864I Front Panel

Elite 2864I

More Than A Modem

Figure 2-2 Front Panel

LED Indicators:

PWR - Power on indicator; lights up when the Elite 2864I's power is turned ON. MDM - Modem mode indicator; lights up when the Elite 2864I operates in modem mode. FAX - Fax mode indicator; lights up when the Elite 2864I is in fax transmission or receiving mode. VO - Voice mode indicator; lights up when the Elite 2864I operates in voice mode. SP - Serial port active indicator; lights up when the Elite 2864I is using the serial port for DTE communication. PRP - Printer parallel port active indicator; lights up when the Elite 2864I is using the parallel port to drive a printer for fax printing. PCP - Reserved B1 - B1 channel connection indicator; lights up when B1 channel is established. Single blink indicates data transmission is protected by Data Encryption Standard (DES). Triple blink indicates data is protected by triple DES. B2 - B2 channel connection indicator; lights up when B2 channel is established. Single blink indicates data transmission is protected by
Data Encryption Standard (DES). Triple blink indicates data is protected by triple DES. AA - Auto-answer indicator; lights up when the Elite 2864I is in the Auto Answer mode; flashes when it rings. CD - Carrier detect indicator; lights up when a valid carrier is detected on the line for fax/modem operation. For ISDN data calls, the LED lights up when a B-channel protocol has been established and is ready for data transmission. DTR/POL DTE mode: Data terminal ready indicator, lights up when the DTE or Computer indicates that it is ready for communication by raising the corresponding RS-232 signal. Printer mode: Printer on line indicator; indicates the signal status of Select from printer. It lights up when the printer is selected and is available for data transfer. DSR/PSL DTE mode: Data set ready indicator; lights up when the Elite 2864I is ready for communication. Printer mode: Printer select signal; indicates the signal status of "-Select-In" from the Elite 2864I to printer. It lights up when printer is enabled to input data. RTS/PPE DTE mode:
Request to send indicator; indicates the signal status of RS-232 signal RTS from DTE. RTS is used for hardware flow control in the case of asynchronous data transmission. Printer mode: Printer paper end indicator, lights up when printer runs out of paper. It indicates the signal status of PE from printer. CTS/PER DTE mode: Clear to send indicator; lights up when the Elite 2864I can accept data for transmission. Printer mode: Printer error indicator; lights up when an error condition exists in the printer, e.g., paper empty or not on-line. It indicates the signal status of Error from printer. TXD - Transmit data indicator; flashes when the DTE/Computer is transmitting data to the Elite 2864I. RXD - Receive data indicator, lights up when the DTE/Computer is receiving data from the Elite 2864I. HLD - Call held indicator; lights up when the telephone connected to the A/B adapter is in Hold condition. LNK - The Link LED lights up when the link with the local switch is active and flashes when attempting to make a connection. LNK is also used as a self-test indicator for the internal fax/modem initialization. OH - Hook status of the A/B adapter, lights up when the telephone handset is picked up (off-hook); flashes when the analog telephone set connected to the A/B adapter is used for local voice mode operation (play back or record).

Step 7 - This completes the remote connection definition. Locate the new connection icon in your Dial-up Networking folder, and double click on it.
Step 8 - If the User name and Password are incorrect or are not there, type them in. Click on the Connect button and your Elite 2864I will dial the number and establish a connection.
Configuring Windows NT 4.0 Dial-Up Networking
This section assumes you have already fully installed Windows NT. If you have not installed the Dial-Up Networking feature in Windows NT, please install it before you continue. Step 1 - From the Windows NT Start button choose Settings, Control Panel, Network.
Step 2 - From the Network dialogue box select Remote Access Service and click Add then OK. Then click the Properties button. Step 3 - From the Remote Access Setup dialogue box select the appropriate COM port and click the Configure button.
Step 4 - From the Configure Port Usage dialogue box choose the desired call option and click OK.
Step 5 - From the Windows NT Start button choose Programs, Accessories, Dial-Up Networking. Step 6 - From the Dial-Up Networking dialogue box click the New button.
Step 7 - From the New Phonebook Entry Wizard dialogue box type a phonebook entry name, and click the Next button. Step 8 - From the Server dialogue box click all options that apply and click Next. Step 9 - From the Phone Number dialogue box type in the phone number of the dial-up server you want to call and click Next. Step 10 - From the New Phonebook Entry Wizard dialogue box click Finish.to save your phonebook entry. Step 11 - From the Dial-Up Networking dialogue box click the More button and scroll down to Edit entry and modem properties.
Step 12 - From the Basic tab, enter the entry name, phone number and choose the RAS port which you want to use. If you select the Use Telephony dialing properties checkbox, the RAS will use the built-in telephony settings to control how it dials the phone. Step 13 - From the Server tab, leave the default setting PPP: Windows NT, Windows 95 Plus, Internet as the Dial-up server type. Enable the proper protocols. Select the TCP/IP Settings button to set the IP address and name server information.

Selecting V.120 for European ISDN (DSS1)
With European ISDN, V.120 is an option in the Bearer Capability (BC) information element, which is a mandatory information element in the SETUP message. Some CompuServe Providers need to use the Low-Layer-Compatibility (LLC) information element to identify the V.120 call. The Low-Layer-Compatibility can be controlled by issuing the following commands: S80.6 = 1 S80.6 = 0 Sending LLC for ISDN data call Not sending LLC for ISDN data call (default)

X.75 ISDN Communications

This chapter will describe how to set-up and configure your Elite 2864I with X.75 protocols. It will also describe Data Encryption Standard (DES) and its application within a growing market of companies and individuals who are concerned with sending and receiving secured messages. X.75 was originally designed for packet-switched signaling systems in public networks to provide data transmission services. But it is now also used as the link layer for telematic services in ISDN. These services include both ISDN circuit-switched mode (DTEDTE communication) and ISDN packet-switched mode (DTE-DCE communication). The table below shows the specifications of different ISDN protocols.
Layer 1 Layer 2 Layer 3 Error Control V.42bis Async or Sync if used with VSeries DTE Bundle Max. Line Speed AT-Command Configuration V.Bits Framing None None No No Async and Sync No Async: 38.4 Kbps Sync: 64 Kbps ATB10 V.120 HDLC LAPD V.120 Yes Yes Async Only X.75 HDLC LAPB Transparent ISO8208 T.70 NL Yes Yes Async Only

Yes 64Kbps 128Kbps ATB20

Yes 64Kbps 128Kbps ATB00: Transparent ATB01: T.70 NL

Answering an X.75 Call

There is no need to configure the ISDN mode to the protocol of an incoming call. The Elite 2864I will be able to determine the correct protocol to use by examining the data coming in from the remote site if the device is set to auto-answer or once an answering command is issued. To allow the Elite 2864I to answer the incoming call, you need to set S0 to a value greater than 0 (i.e. ATS0=1). The Elite 2864I will answer the call and use asynchronous to synchronous conversions to and from the DTE. If S0 is not set (S0=0), the DCE will report RING and will also make an audible ring notification.

unknown (default if Nn is omitted) ISDN numbering plan (Rec. E.164) data numbering plan (Rec. X.121) telex numbering plan (Rec. F.69) national standard numbering plan private numbering plan
Zn specifies the Subaddress type: Z0 Z2 NSAP (Rec. X.213) with AFI=0x50, IA5 characters (default if Zn is omitted) user specified, IA5 characters
The command AT&ZOx=// will remove the Number/Subaddress assignment. The number and Subaddress assigned by AT&ZOx=s, if any, will be used for Calling-Party-Number and Calling-Party-Subaddress information elements respectively while dialing. The default settings of the Phone Number and Subaddress of all the types of calls are UNASSIGNED - meaning the SETUP message sent by the Elite 2864I contains neither Calling-Party-Number nor Calling-Party-Subaddress information elements. The command AT&ZO? can be used to browse the current settings of the own numbers and subaddresses.
Call Control for 1TR6 (Old German ISDN)
In order to initiate an 1TR6 ISDN call, two information elements are necessary: 78 Service Indicator Destination Address
The Service Indicator determines what kind of bearer services are desired. The Destination Address provides necessary information for the telephone company Central Office (CO) to direct the call to the remote party.
The Outgoing Service Indicator will be assigned when you configure the B channel protocols using the command ATBnn. Since there are a number of combinations of voice or voice-banddata services on the analog adapters, users may want to control the outgoing Service Indicator themselves for some specific applications. The following table is recommended to configure S104/S107 (Service Indicator) and S108/S111 (Additional Information Octet) according to the terminal types :
Service Indicator S107: analog adapter S104: internal fax/modem 1 (Fernsprechen) 2 (analog - dienste) 3 (analog - dienste) Addi. S. I. S111: analog adapter S108: internal fax/modem 1 (3.1 KHz) 3 (Daten ber Modem) or 4 (Btx ber Modem) 2 (Fax Gruppe 3)

Telephone Modem G3 Fax

Control of ENDGERTEAUSWAHLZIFFER (EAZ)

Answering a Call

The incoming call will first be identified as either an ISDN data call or a voice call (including the voice-band-data). ISDN data calls will be routed to the digital communications portion of the Elite 2864I. Voice calls or voice-band-data calls will be assigned to the analog adapter or internal fax/modem.
Answering a Call for DSS1
The Multiple Subscriber Number (MSN) supplementary service provides the possibility for assigning multiple ISDN numbers to a single ISDN BRI line. Calling users can select, via the public network, one or more distinct terminals on a BRI line. In some areas however, it is very expensive to get additional subscriber numbers. The Subaddress, which is transferred transparently by the ISDN network between the call originating 81
entity (e.g. the calling user) and the addressed entity, can be used for the same purpose as the MSN. Since the Elite 2864I is highly integrated and multi-functional, it can be imagined as a black box that contains multiple distinct terminals. Each of these "internal terminals" can be assigned one ISDN number using the AT&ZIn=xxxx. command. The number assigned by AT&ZIn=xxxx. can be interpreted as either the MSN or the Subaddress. This is determined by the bit 5 of S119 as follows. S119.5=0 S119.5=1 number is treated as the MSN (default) number is treated as the Subaddress
The factory default for these numbers are unassigned. If an incoming SETUP message is offered with addressing information (i.e. the appropriate part of the called party number or the called party Subaddress), this address will be compared with the MSN/Subaddress numbers assigned by the AT&ZIn=xxxx. commands. The call will be accepted using the specific protocol if the assigned number of this protocol matches with the received called party number or called party Subaddress. 2127( 7:23+21(180%(5675,1*6$5(6$,'72%(0$7&+(',)7+(,5/($67 6,*1,),&$171',*,76$5(,'(17,&$/:+(5(1,67+(180%(52)',*,762) 7+(6+257(5675,1*868$//<21(',*,7,6(128*+72',67,1*8,6+7+(9$5,286 35272&2/6
Answering a Call for 1TR6
If an incoming SETUP message is offered with addressing information (i.e. the destination address W-element). This address will be compared with the EAZ numbers assigned by the AT&ZIn=m commands. The call will be accepted using the specific protocol if the assigned number of this protocol matches with the received address. 82
Best-effort Call Answering
If some numbers have been set using &ZI command (as can be seen by the AT&ZI? command) and they are not matched with the address of the incoming call, the Elite 2864I will, by default, ignore the call as it may be intended for other devices that share the same S/T interface (S0 bus) with the Elite 2864I. If you want the Elite 2864I to answer inbound calls as often as possible, you can set the best-effort call answering bit as follows: S119.3=0 S119.3=1 Answer call only when number matched (by default) Best effort call answering

Ambiguity Resolution Switch for Voice Calls
For a voice or voice-band-data call, if the &ZI number assignment can tell whether the analog adapter or internal fax/modem is being addressed, then the call will be delivered to the proper destination. But sometimes, ambiguity of address matching may exist. This may happen if the &ZI numbers of the various protocols are either unassigned or not matched or the address information is absent in the incoming SETUP message. In this case, users may wish to set the priority of answering a call as either the analog adapter or internal fax/modem. The AT&Ln command sets the address ambiguity resolution flag: AT&L0 The analog adapter has the higher priority to answer a voice or voice-band-data call; if it is busy, the call will be routed to internal fax/modem. The internal fax/modem has the higher priority to answer a voice or voice-band-data call; if it is busy, the call will be routed to the analog adapter.

AT&L1

Multi-Auto-Answering of Data Calls
For an ISDN data call, if the Elite 2864I can exclusively determine the protocol to be used by means of the information conveyed by the SETUP message (for DSS1, these include the Bearer83
Capability, Low-Layer-Compatibility, or High-Layer-Compatibility information elements; for 1TR6, these include the Service Indicator as well as the Additional Octet of Service Indicator), then the indicated protocol will be used. Otherwise, the Multi-Auto answering process will be invoked. The Elite 2864I can monitor the B channel signal sent by the calling site. The data call can be identified by the Elite 2864I to be internal fax/modem, X.75, V.110, V.120, or PPP Async-to-Sync, conversion and MPPP.

Data Call Indication

When ringing, the Elite 2864I will send the first RING message to the DTE with a format as follows: RING <CR><LF> [FM:[[Prefix]Calling-PartyNumber][/Subaddress/]] [TO:[Called-Party-Number][/Subaddress/]] <CR><LF> RING <CR><LF> RING <CR><LF>. The display of address information between the first RING and the second RING can be disabled by setting ATS84.4=1. The term [Prefix] is a predefined number string to be added in front of the Calling-party-number before indicating it to the DTE. This is useful for some automatic dial-back-up systems. The number string can be assigned as follows: ATCI<Prefix> When and only when the type-of-number denotes an international number will this "Prefix" be added to the Calling-partynumber before indicating it to the DTE.

Nn is the identifier of numbering/addressing plan: N0 N1 unknown (default if Nn is omitted) ISDN numbering plan (Rec. E.164)
The destination_address is the ISDN phone number of the called party. The last digit of this number is the EAZ. Use ATDL to redial the last dialed ISDN phone number.

Leased Line ISDN

The B-channel protocols supported for the leased line are V.110, V.120, X.75, PPP and MP which is selected using ATBxx
commands as in the dial-up mode. The following AT commands are used to select the Leased Line function: AT&In AT&I0 AT&I1 AT&I2 AT&I3 normal/leased line options S14b2-3 normal dial-up phone line. leased line function in B1 channel only, dial-up function in B2 channel leased line function in B2 channel only, dial-up function in B1 channel leased line function in both B1 and B2 channels.
If the leased line mode configuration has been saved as the poweron user's profile and upon power-on, the Elite 2864I will ALWAYS try to make a connection with the remote site using the preselected protocol, B-channel ( B1 or B2 ), and originate/answer mode. To change the Elite 2864I from the leased line mode back to the dial-up mode in this case, one has to reset the modem to factory default settings. For some protocols that are originate/answer mode sensitive, use the following command to configure the originate/answer mode: AT*Mn AT*M0 AT*M1 leased line auto-handshake mode selection S14b0 leased line auto-handshake for Originate mode leased line auto-handshake for Answer mode
If the leased line mode is just selected after power-on, the following commands can be used to make a leased line connection: ATDB1 ATDB2 ATDB3 ATAB1 ATAB2 ATAB3 use B1 channel in Originate mode use B2 channel in Originate mode use both B1 and B2 channels in Originate mode use B1 channel in Answer mode use B2 channel in Answer mode use both B1 and B2 channels in Answer mode

Security Functions

Security Types and Levels
The Elite 2864I provides security functions that may be enabled to prevent unauthorized connections. Two types of security functions are provided. Type 1 security is to be used when the remote TA is a ZyXEL ISDN TA Type 2 security is to be used when the remote TA is nonZyXEL.
With a Type 1 connection, the dial-in (remote) TA will send in its supervisor password for matching with local Elite 2864Is prestored password list. With a Type 2 connection, the remote terminal will be prompted to enter the password at the initial connection and the local Elite 2864I will match the entered password with the pre-stored password list. The two types of security are summarized in the table below:

The DTE-DCE protocols (at the R reference point according to the ISDN nomenclature) include the AT commands/responses as well as the CAPI internal interface. The CAPI internal interface is used with ZyXELs CAPI driver. The ZyXEL CAPI driver communicates with the Elite 2864I through this internal interface. It is not recommended that users get involved in this internal interface. The AT commands/responses, on the other hand, are in a standard user interface. An analysis of these commands and responses might prove very informative. All messages captured by the EPA are tagged with a time stamp according to a free running timer that starts at the beginning of data capture. The resolution of this timing information is 0.01 second. The following commands determine the kind of protocol data to be captured by the EPA:
AT Command ATCDn n=0 n=1 ATCBn n=0 n=1 ATCCn n=0 n=1 Description Disable the capture of D channel protocols Enable the capture of D channel protocols (default) Disable the capture of B channel protocols (default) Enable the capture of B channel protocols Disable the capture of DTE-DCE interface protocols (default) Enable the capture of DTE-DCE interface protocols
The EPA starts to capture data when the command ATCT is issued. This capturing process will continue until the command ATC$ is issued. The EPA maintains 8 Kbytes RAM as a ring buffer. In case the buffer is full, the earliest data captured will be overwritten by the latest data.
Analyzing the Captured Data
To view the analyzed result, use the command ATC$. For your convenience, the relevant AT commands are summarized as follows:
AT Command ATCT ATC$ Description Clears buffer and starts the embedded protocol analyzer. Captures data immediately and starts the timer. Invokes the interpretation function of the embedded protocol analyzer and displays the results on the DTE screen.
The analyzed results can be viewed as if it were in a full screen editor. Several number keys are used to control the display. For PC users, it is convenient to use the keys on the numeric keypad (make sure that Num-Lock is on.). The functions of the control keys are as follows:
Key Q, q Function End Cursor down Page down Home Cursor up Page up Quit Description Display to the end of buffer Scroll one line up Display the next page Display the first page Scroll one line down Display the previous page Quit embedded protocol analyzer

Any other key will display the control menu.

AT Command Set Reference

DTE Interface Operation Modes
There are two operation modes for the DTE interface : Simplex mode is used for conventional AT Command operation. Multiplex mode is used as an internal interface for ZyXEL CAPI drivers.

Simplex mode

In simplex mode, the Elite 2864I is used just like an ordinary modem. The DTE interface will be either in the command state or in the data state. Only one data connection session is possible at any time. To invoke various functions of the Elite 2864I, a number of different AT Commands can be used. The simplex mode is designed for the AT Command users. The guides and descriptions throughout the rest of this manual, if not otherwise specified, are applicable to this mode. The power-on default of the DTE interface is in simplex mode as well.

Multiplex mode

The multiplex mode is designed for ZyXEL CAPI drivers. It can also be used by third parties to develop various drivers on different platforms for public domain or for commercial purposes.
The commands or data are packetized. Each packet has its own destination address. All the DTE channels can be accessed individually by way of multiplexing. Since it is not intended for all users, the specifications and manual for the multiplex mode will be available in a separate text file, and will only be available in the electronic format upon request.

AT Command Descriptions

An AT Command is a command in asynchronous data format issued by the computer to the modem through the asynchronous computer-modem interface. AT Commands control the modem's behavior and actions. To send an AT Command from a computer to the modem, you must be running a communication software and the modem must be in the command state. Exceptions to this are A/, A>, and +++. These commands are not preceded by AT, or followed by any more characters. A/ A> re-executes the last command once re-executes the last command once or repeats the last call up to 9 times until aborted by pressing down on any key on the keyboard or front panel or until a successful connection with a remote modem has been made. is the escape sequence code that is entered in data state to return the modem to command state. The modem will accept AT commands only while it is in command state.
The AT command prefix may be typed in either upper AT or lower case at. Do not use a combination of upper and lower cases in the prefix. The following tables list all of the AT commands supported by the Elite 2864I. An asterisk * following a command option or value indicates that it is a default setting when the modem is shipped.

Description of ATI3 Output:
The Link Status Report output appears as follows:
ZyXEL ISDN MODEM LINK STATUS REPORT Connect DTE Speed Error Control Level Protocol Link Speed Bytes Received Bytes Sent Cause Cause Value HDLC FCS Error HDLC Receive Over-run HDLC Transmit Under-run : : : : 0 : 0 : : 0 : 0 : 0 : 0
Output Parameter Connect DTE Speed Error Control Level Protocol Link Speed Bytes Received Bytes Sent Cause Cause Value HDLC FCS Error
HDLC Transmit Under-run HDLC Receive Overrun
Output Value Description Current on-line DTE speed Error control protocol used for current session Current on-line DCE speed, line speed Number of data bytes received from remote Number of data bytes sent to remote Verbose disconnection reason for the last session Numerical disconnection reason for the last session Errors in frame (block) checksum (If there were many FCS Errors, you may have experienced problems on the line) For modem's processor power measurement. For modem's processor power measurement.
Extended "AT&" Command Set
Command Options Function & Description &Bn Data rate, terminal-to-modem (DTE/DCE) &B0 DTE rate follows connection rate. (See also S44.6) &B1 * DTE/DCE rate fixed at DTE setting. (See also S18, S20 and S44.6) &Cn Carrier Detect (CD) options &C0 CD always ON. (See also S42.7) &C1 * CD tracks presence of carrier. (See also S38.3, S42.7) &Dn Data Terminal Ready (DTR) options &D0 Ignore DTR signal, assume DTR is always ON. &D1 108.1, DTR OFF-ON transition causes dial of the default number. (See also 'AT*Dn' and S48.4) &D2 * 108.2, Data Terminal Ready, DTR OFF causes the modem to hang up. &D3 Same as &D2 but DTR OFF causes the modem to hang up and reset from profile 0. &En B channel line speed for ISDN data call &E0 * 64Kbps &E1 56Kbps (Default for American ISDN) Ref. S28.6

S21.6-7

&F &Hn

&In

&Jn

&Kn

&Knn

&Ln

&Mn

&Nn

Load factory settings to RAM as active configuration. Data flow control, DTE/DCE. &H0 Flow control disabled. &H3 * Hardware (CTS/RTS) flow control &H4 Software (XON/XOFF) flow control. Dial-up/leased line options &I0 * Dial-up line mode &I1 Leased line mode in B1 channel &I2 Leased line mode in B2 channel &I3 Leased line mode in both B1 and B3 channel Bundle selection (See also S100) &J0 * Bundle connection is disabled &J1 Bundle connection is enabled in answer mode only &J2 Bundle connection is enabled in call mode only &J3 Bundle connection is enabled in both directions Modem error control and data compression &K0 No error control. (Same as AT&K) &K1 MNP4 (See also S41.0) &K2 MNP4+MNP5 (See also D38.5, S41.0) &K3 V.42+MNP4 &K4 * V.42+V.42bis, compatible with &K2 (See also S38.5) ISDN data compression control. &K must be followed by two digits. &K00 Disable V.42bis (or disable reliable PPP). &K44 Enable V.42bis (V.120, X.75, PPP), STAC (PPP) Modem and a/b adapter address ambiguity resolution &L0 A/B adapter first &L1 Fax/Modem first Synchronous/asynchronous mode options &M0 * Asynchronous mode with data buffering &M1 Asynchronous command, synchronous data &M2 Direct asynchronous mode, no data buffering &M3 Synchronous mode Modem link mode options (DTE/DCE). (See also S43.7, S48.1)

S27.3-5

S87.5-6

S27.0-2

S14.6-7
&N0 * Multi-Auto, auto negotiate highest possible link rate: V.34, ZyX 19200, ZyX 16800, V.32bis, V.32, V.22bis, V.22 and Bell 212A, G3 Fax V.17/V.29/V.27ter and cellular modes. (See also S38.4, S43.0, S43.1, S43.3 and S48.5) &N1 V.33 14400/12000 (models with 4-wire leased line only) &N2 V.(models with 4-wire leased line only) &N3 V.32 9600T/9600/7200T/4800 &N4 V.32 9600/7200/4800 &N5 V.&N6 V.(models with 4-wire leased line only) &N7 V.(models with 4-wire leased line only) &N8 V.(models with 4-wire leased line only) &N9 V.27bis 4800 (models with 4-wire leased line only) &N10 V.27bis 2400 (models with 4-wire leased line only) &N11 V.26bis 2400 (4-wire leased line or 2-wire halfduplex).(See also S35.2, S39.5) &N12 V.23 1200/75 (See also S48.3, S52.7) &N13 V.23 600/75 (See also S52.7) &N14 V.22bis 2400/1200 &N15 V.&N16 V.&N17 V.32bis 14400/12000/9600/7200/4800 &N18 V.32bis 12000/9600/7200/4800 &N19 V.32bis 7200/4800 &N24 BELL 212A 1200 &N25 BELL &N32 G3 Fax V.17/V.29/V.27ter 14400/12000/9600/7200/4800/2400 (See also S42.4). &N34 ZyXEL 19200 &N35 ZyXEL 16800 &N36 ZyXEL 14400 &N37 ZyXEL 12000
&N38 &N39 &N42 &N43 &N44 &N45 &N46 &N62 &N63 &N64 &N65 &N66 &N67 &N68 &N69 &N70 &N71 &N72 &N73 &On

&O1 &Sn

&Tn

&Vn

ZyXEL 9600 ZyXEL 7200 CELL 14400 CELL 12000 CELL 9600 CELL 7200 CELL 4800T V.V.V.V.V.V.V.V.V.V.V.V.Set default call type for conventional dialing S83.4-5 commands. &O0 ATDs, ATDPs, and ATDTs default to make fax/modem calls &O2 ATDs, ATDPs, and ATDTs default to make ISDN data calls &O3 ATDs, ATDPs, and ATDTs default to make calls for the analog adapter Autoselection of 64 Kbps and 3.1 kHz on outgoing calls Data Set Ready (DSR) function selection. S21.3 &S0 * DSR overridden, DSR always ON. &S1 DSR according to CCITT (ITU-TSS). (See also S41.5, S44.4) Modem testing. &T0 Terminate test in process &T1 Initiate Analog Loopback (ALB) test &T8 Initiate Analog Loopback with self test (ALB+ST) &T9 Initiate ISDN Loopback test &T10 Initiate ISDN Loopback with self test View profile settings.

&Wn &Yn

&V0 &V1-4 &V5 &V6 &V8 n=0-3 n=0-2

&Zn=s

&Y0 &Y1 * &Y2 n=0-39

&ZIn=s

n=0-7 s=phone number
n=0 n=1 n=2 n=3 n=4 n=5 n=6 n=7 &ZI?
View current active settings. View the (n-1)th user profile settings View factory default settings View a/b adapter setting System resources status Write current settings to user profile n in nonvolatile RAM. (See also S35.6) Break handling. (Destructive Break clears the S28.2-3 buffer. Expedited Break is sent immediately to the remote system.). For internal modem only Destructive, expedited Nondestructive, expedited Nondestructive, unexpedited Write phone number/s to NVRAM at location n (n=0-39) use AT*Dn or ATS29=n to set the default dial pointer. Assign the phone number (including subaddress, if any) for various B-channel protocols. In answer mode, these numbers will be compared with the received called party number and called party subaddress information. The call will be accepted using the specific protocol if the assigned number of this protocol matches with the called party number. assigns the phone number for X.75 assigns the phone number for V.110 assigns the phone number for V.120 assigns the phone number for PPP async to sync HDLC assigns the phone number for ISDN data (MultiAuto answering , auto-detect the protocols) Assign the phone number for PPP async to sync HDLC Assign the phone number for internal fax/modem Assign the phone number for the a/b adapter Display the phone number (including subaddress , if any) for various B channel protocols

*G3 *G4 *G5

+000 *Dn S29 &C1 S21.4

dec 16

hex 10

&N0 &Kn +000 ATA

S40= S41=

bit 1 bit 3 4

dec 2 dec 8 16

hex 2 hex 8 10

+000 Q2 +000 &Kn S27b6 *Qn
DSR follows DCD and pulses (see also &Sn S44.4) 40 Force S0>=2 SIgnore calling tone, not to be used as fax detection bit dec hex Bit mapped register +Disable escape sequence code in answer mode 10 Disable V.17, 14,400 Fax in calling mode, no effect to answering mode &NDisable Data/Voice button 40 Disable <RINGING> result code Xn 80 DCD forced on but pulse off for 0.5 &C0 second at carrier loss bit dec hex Bit mapped register +Disable ZyXEL 16800 in Multi-Auto &N0 mode 2 Disable ZyXEL 19200 in Multi-Auto mode bit dec hex Bit mapped register +ATDSn initiates auto-dial of the stored DSn numbers consecutively until connection is &Zn made S38.DSR follows DTR (see also S41.5) &Sn bit dec hex Bit-mapped register +Enable data CNG calling tone transmission bit dec hex Bit-mapped register +000 0This timer counts when there is no data 255 flow in or out of the RS 232 serial port; modem will hang up phone, when timed out. units is 10 seconds! 000 disables timer Note: timer is forced disabled in leased line and ISDN Mode bit dec hex +050 00-FF Hook flash detected time for a/b adapter, 255 in units of 10ms bit dec hex 0-3 Reserved

S66=n S71=

S74= S75=
Enables the reporting of Class 1 capability in the response to +FCLASS=? 5 Reserved 40 Enables busy detection in dialing period 80 Report 'DATA or FAX' before showing Connect Message 0 * Dial back repeat counter of security function bit dec hex Bit-mapped register +064 0-2 0-5 0-5 ZyXEL fax receive mode select +FZF 0 * 0 Fax to printer, hang up if data Fax to printer, data to serial port Fax to DRAM & printer, hang up if data Fax to DRAM, hang up if data Fax to DRAM & printer, data to serial port Fax to DRAM, data to serial port 10 Delete DRAM fax file after printed 20 Keep DRAM fax even it has been retrieved * 0 High speed fax retrieval for ZFAX only Slow retrieve process (for Class 2) bit dec hex Select printer type +* 0 HP LJ-II series or compatible PCL Printer HP LJ-III series or compatible PCL Printer POSTSCRIPT Printer bit dec hex Bit-mapped register +*Parallel Port for fax printing Serial Port for fax printing 1 *Fast PCL Printing 2 *PCL printing resolution 300dpi +FZR PCL printing resolution 150dpi 3 *Automatic resize for fax printing 4-5 0-32 0-20 ZyXEL fax printing, paper size +FZS Paper size : LETTER (8.5 inch * 11 inch) Paper size : LEGAL (8 inch * 14 inch) Paper size : A4 (210 mm * 287 mm) Reserved, read only bit dec hex Bit-mapped register +008 0-2 0-5 0-5 Multiauto answered fax class selection