56K Analog Modem Users Manual

Copyright

Copyright 2002 by this company. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of this company.

Disclaimer

This company makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specically disclaims any warranties, merchantability or tness for any particular purpose. Any software described in this manual is sold or licensed as is. Should the programs prove defective following their purchase, the buyer (and not this company, its distributor, or its dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages resulting from any defect in the software. Further, this company reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation to notify any person of such revision or changes.
All brand and product names mentioned in this manual are trademarks and/or registered trademarks of their respective holders. 56K Analog Modem 1

Contents

1 Introduction..... 3 1.1 System Requirements... 3 1.2 Package Contents.... Hardware Installation Instructions.... 4 2.1 PCI Interfaced Analog Modem Card... 4 2.2 RS232 Analog Modem.... 4 2.3 Pocket Sized USB/RS232 Analog Modem.... Software Driver Installation.... 4 3.1 Modem Software Driver Installation Procedures... 4 3.1.1 For Windows ME, 2000 and XP... 5 3.1.2 For Windows 98SE.... 7 3.1.3 For Windows NT4.0.... 10 3.1.4 Additional Agere Modem Notes... 10 3.2 Contact Information....11

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1. Introduction
Fax Modem Installation CD is an All-In-One installation utility for both internal and external Fax, Voice/Fax
and Voice/Fax with Speaker Phone Analog Modems. It automatically detects and installs recently installed modem hardware under Windows 98SE, ME, 2000 and XP. This utility includes Install Driver, Install Software Utilities, User Manual and Readme four sections. Click Install Driver to start analog modem device driver installation process. Install Software Utilities includes FaxTalk Communicator SE (all modem software driver installation program), FaxTalk NetOnHold (modem software driver installation program for modems with Holdon-Call feature), Adobe Reader 6.0 and Panda Antivirus Platinum 7.0. User Manual includes this users manual and specs for all modems this utility supports. Readme includes modem software driver locations and modem hardware installation instructions. 1.1 System Requirements Pentium 100 Mhz CPU or faster 32 MB system memory or more 10 MB free space on your hard drive 256-color VGA or higher resolution CD-ROM drive One available PCI slot for internal modem; one available USB connector or RS232 connector for external modems Microsoft Windows 98SE, ME, XP, or 2000 operating system disk 1.2 Package Contents One internal/external Analog Modem One RJ-11 Cable One USB Cable for USB model; One RS232 Cable for RS232 model 9V AC adapter for RS232 Analog Modem Fax Modem Installation CD CD-ROM disk Quick Installation Guide
If any of above items is missing or damaged, please contact your local dealer immediately.

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2. Hardware Installation Instructions
2.1 PCI Interfaced Analog Modem Card 1) Open PC case and insert PCI Card into an available PCI slot. 2) Close PC case, then plug one end of RJ-11 cables into modems LINE jack and the other end into telephone wall jack. 2.2 RS232 Analog Modem 1) Connect modem and PC with RS232 cable. 2) Plug one end of RJ-11 cable into modems LINE jack and the other end into telephone wall jack. 3) Plug in AC power adapter. 2.3 Pocket sized RS232 and USB Analog Modem 1) Connect modem and PC with RS232/USB cable. 2) Plug one end of RJ-11 cable into modems LINE jack and the other end into telephone wall jack.

3. Software Driver Installation
3.1 Modem Software Driver Installation Procedures Insert FAX Modem Installation CD into CD-ROM drive then window below will appear.

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Install Driver: Click Install Driver to start analog modem installation process. Install Software Utilities: Install Software Utilities includes FaxTalk Communicator SE (all modem software driver installation program), FaxTalk NetOnHold (modem software driver installation program for modems with Hold-on-Call feature), Adobe Reader 6.0 and Panda Antivirus Platinum 7.0. User Manual: User Manual includes this users manual and specs for all modems this utility supports. Readme: Readme includes modem software driver locations and modem hardware installation instructions.
3.1.1 For Windows ME, 2000 and XP 1)Once click Install Driver to start the analog modem installation, window below will appear.
2)After Fax Modem Installation Utility finishes installing corresponding analog modem device driver, window below will appear. Click OK to complete the installation process.

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3)Click Exit to close FAX Modem Installation Utility.
4) To check if modem is properly installed: For Windows ME Click StartSettingsControl PanelModems.

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3.1.2 For Windows 98SE 1) Once click Install Driver to start the analog modem installation, window below will appear:
2) After Fax Modem Installation Utility nishes copying analog modem device driver, window below will appear then click OK to reboot your system.
3) After system boots up, operating system will detect the recently installed analog modem, window below will appear then click Next to continue.

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4) Click Next to continue,
5) Select Specify a location (utility automatically gives driver location, so you dont have to enter the driver location path) then click Next to continue,

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6) Click Next to continue,
7) After operating system nishes installing the analog modem driver, click Finish to complete the device driver installation,

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8) To check if modem is properly installed: Click Start Settings Control Panel Modems.
3.1.3 For Windows NT4.0 Windows NT4.0 Installation process: 1) This Fax Modem Installation CD does NOT support Windows NT4.0 autorun. Once you install modem in Windows NT4.0 system, open the CD-ROM contents, and direct to Modems NT4.0 driver. 2) Open the folder NT40 and then double-click on its install program. Note: For locating modems install program, please refer to the below list of Modem chipset and its NT40 directory. Agere HPI56L: \\Driver\Agere(Lucent) \Internal\PCI2\NT40\setup.exe Conexant VPI56SP: \\Driver\Conexant\Internal\Controlless\NT40\SETUP.EXE Intel VPI56SPA: \\Driver\Intel(Ambient)\Internal\Controlless\NT40\installer.exe 3) Follow the instructions on the screen to install modem. 4) When nish the installation, we recommend you to restart your computer for systems setting before you use the modem. Then, the Modem setup is now nished.

+GMI - Request Manufacturer Identification
This command causes the modem to report the modem product manufacturer as provided by the.INF File. Syntax +GMI Typical Response +GMI: Conexant OK
+GMM - Request Model Identification
This command causes the modem to report the modem product model as provided by the.INF File. Syntax +GMM Typical Response +GMM: HSF 56K Data, Fax, Speakerphone, PCI Modem OK
+GMR - Request Revision Identification
This command causes the modem to report the modem version, revision level, or date as provided by the.INF File. Syntax +GMR Typical Response +GMR: 1.0 OK
+GSN - Request Product Serial Number Identification
This command causes the modem to report the modem product model serial number as provided by the.INF File. Syntax +GSN Typical Response +GSN: OK
+GOI - Request Global Object Identification
This command causes the modem to transmit one or more lines of information text identifying the device, based on the ISO system for registering unique object identifiers. Typically, the text consists of a single line containing numeric strings delimited by period characters. The general format of object identifiers is defined in Section 28 of ITU-T Recommendation X.208; the encoding rules are defined in ITU-T Recommendation X.209. The response is provided by the.INF file. Syntax +GOI Typical Response +GOI: OK
+GCAP - Request Complete Capabilities List
This extended-format command causes the modem to transmit one or more lines of information text listing additional capabilities command +<name>s , which is intended to permit the user to identify the overall capabilities of the modem. In particular, if the modem implements a particular modem control standard that uses Extended Syntax Commands, and if that modem control standard includes command(s) that indicate general capabilities, the +<names>(s) of those commands will be reported to the modem in response to a +GCAP command. Syntax +GCAP Example Responses +GCAP: +FCLASS, +MS, +ES, +DS, for a data modem that supports all capabilities listed Where: +FCLASS +MS +ES +DS T.class1, +F (Class 1 Facsimile modem Control) +M commands (Modulation Control: +MS and +MR commands) +E commands (Error Control: +ES, +EB, +ER, +EFCS, +ETBM) +D commands (Data Compression: +DS and +DR)

Reporting Supported Range of Parameter Values Command: +DR=? Response: Example: +DR: (<value> range) +DR: (0,1)
+DR: <type> Intermediate Result Code The +DR: <type> reported represents the current (negotiated or renegotiated) modem-modem data compression type. If enabled, the intermediate result code is transmitted at the point after error control negotiation (handshaking) at which the modem has determined which data compression technique will be used (if any) and the direction of operation. The +DR intermediate result code, if enabled, is issued after the Error Control Report (+ER) and before the final result code (e.g., CONNECT). The format of this result code is: Result Code Syntax +DR: <type> Defined Values <type> An alphanumeric code corresponding to the selected option: NONE Data compression is not in use. V42B ALT Example +DR: V42B V.42bis is in use in both directions. MNP 5 compression.
%C - Enable/Disable Data Compression
Enables or disables data compression negotiation. The modem can only perform data compression on an error corrected link. Syntax %C[<value>] Defined Values <value> A decimal number corresponding to the selected option: Result Codes OK ERROR <value> = 0, 1, 2, or 3. Otherwise. Disables data compression. Enables both V.42 bis and MNP 5 data compression. Enables both V.42 bis and MNP 5 data compression. Enables both V.42 bis and MNP 5 data compression. (Default.)

N - Automode Enable

This command is included for compatibility only and has no effect other than returning a result code. The only valid values are 0-1. Syntax N[<mode>] Defined Values <mode > Result Codes OK ERROR <mode> = 0 to 1. Otherwise. Decimal number corresponding to the selected value: 0-1.

V.8/V.8bis Commands

+A8E - V.8 and V.8bis Operation Controls
This command is defined for two conditions: as a parameter while the modem is on-hook, and as an action command while the modem is off-hook. If enabled, V.8 negotiation does not preclude simultaneous implementation of other negotiation means (e.g., V.8bis, V.18, V.32bis Annex A). This command is a compound parameter if issued while the modem is on-hook, used to precondition V.8 and V.8bis originating and answering operation. It is issued by the DTE before the Dial (D) or Answer (A) command, regardless of the state of the +FCLASS parameter. This command is an action command if issued while the modem is off-hook, to (re)start V.8 or V.8bis negotiation. For example, if initial V.8 negotiation failed, but subsequent T.30 negotiation indicated V.8 capability, this command may be used to initiate V.8 negotiation. Syntax +A8E=<v8o>,<v8a>,<v8cf>[,<v8b>][,<cfrange>][,<protrange>] Defined Values <v8o> Decimal number which enables/disables issuance of +A8x indications during modem-controlled V.8 origination negotiation <v8a>= Enable DCE-controlled V.8 origination negotiation without +A8x indications. (Default.) Enable DCE-controlled V.8 origination negotiation with +A8x indications.

Synchronous Access Mode Commands
+ESA - Configure Synchronous Access Mode
This extended-format compound parameter controls the manner of operation of the Synchronous Access Mode in the modem. Enabling Synchronous Access Mode enables the use of the 8-bit command characters defined in Table 9/V.80 of the Draft ITU-T Recommendation V.80 (DATA COMMUNICATION OVER THE TELEPHONE NETWORK; In-Band modem Control and Synchronous Data Modes for Asynchronous DTE). Syntax +ESA=[<trans_idle>[,<framed_idle>[,<framed_un_ov>[,<hd_auto>[,<crc_type> [,<nrzi_en>[,<syn1>[,<syn2>]]]]]]]] Defined Values <trans_idle> Decimal number which specifies the bit sequence transmitted by the modem when a transmit data buffer underrun condition occurs, while operating in Transparent sub-Mode. The options are: 0 In Transparent sub-Mode, modem transmits 8-bit SYN sequence on idle. Modem receiver does not hunt for synchronization sequence (default and fixed).

<framed_idle>

Decimal number which specifies the bit sequence transmitted by the modem when a transmit data buffer underrun condition occurs immediately after a flag, while operating in Framed sub-Mode. The options are: 0 In Framed sub-Mode, modem transmits HDLC flags on idle (default and fixed).

<framed_un_ov>

Decimal number which specifies the actions undertaken by the modem when a transmit data buffer underrun or overrun condition occurs immediately after a non-flag octet, while operating in Framed sub-Mode. In Framed sub-Mode, modem transmits abort on underrun in middle of frame. (Default.) In Framed sub-Mode, modem transmits a flag on underrun in middle of frame, and notifies DTE of underrun or overrun.

<hd_auto>

Decimal number which specifies whether or not, in V.34 halfduplex operation, additional procedures besides those specified in 12/V.34 will be performed by the modem when switching from primary channel to secondary channel operation, and vice versa. This subparameter should not be commanded. Decimal number which specifies the CRC polynomial used while operating in Framed sub-Mode. The options are: 0 CRC generation and checking disabled. (Default and fixed.)

Reporting Supported Range of Parameter Values Command: +PMHT=? Response: Example: +PMHT: (<value> range) +PMHT: (0,1,2,3,4,5,6,7,8,9,10,11,12,13)
+PMHR - Initiate Modem-on-Hold
This command requests the modem to initiate or to confirm a modem-on-hold procedure. The modem will return ERROR if modem-on-hold is not enabled or if the modem is in an idle condition. The modem will return the string response +PMHR: <value> where <value> is a decimal value corresponding to the status of the modem's hold exchange procedure as defined below. This response may be delayed depending upon the context under which the +PMHR command is made, i.e., if the +PMHR is in response to an incoming modem-on-hold or if it is initiating a request. Note: If modem-on-hold is enabled but the remote server does not support V.92 then the modem will always report 0 to show that the hold request is denied. Syntax +PMHR Response +PMHR:<value> <value> Decimal number corresponding to the maximum hold time the server or hold-granting modem will allow. Result Codes OK ERROR 0-13 in V.92 Mode (+MS=V92) Otherwise V.92 MOH request denied or not available. MOH with 10 second timeout Granted. MOH with 20 second timeout Granted. MOH with 30 second timeout Granted. MOH with 40 second timeout Granted. MOH with 1 minute timeout Granted. MOH with 2 minute timeout Granted. MOH with 3 minute timeout Granted. MOH with 4 minute timeout Granted MOH with 6 minute timeout Granted. MOH with 8 minute timeout Granted. MOH with 12 minute timeout Granted. MOH with 16 minute timeout Granted. MOH with indefinite timeout Granted.
+PIG - PCM Upstream Ignore
This command controls the selection of PCM upstream in the modem. The actual state of PCM upstream is determined by the state of this command as well as the state of a negotiated handshake with a V.92-compliant server in V.92 Mode. Syntax +PIG=<value> Defined Values <value> Decimal number corresponding to the selected operation. Result Codes OK ERROR 0 or 1 in V.92 Mode (+MS=V.92) Otherwise Enable PCM upstream negotiation. Disable PCM upstream negotiation. (Default.)

S6 - Wait Time for Dial Tone Before Blind Dialing, or After W Dial Modifier
S6 sets one of two possible parameters: 1. 2. Sets the length of time, in seconds, that the modem will wait before starting to dial after going off-hook when blind dialing. If enabled by country options in the INF file, S6 sets the length of time, in seconds, that the modem will wait for dial tone when encountering a W dial modifier before returning NO DIAL TONE result code.
The modem always pauses for a minimum of 2 seconds, even if the value of S6 is less than 2 seconds. Range: 2-255 seconds Default: 2
S7 - Wait Time For Carrier After Dial, For Silence, or For Dial Tone After W Dial Modifier
S7 sets one of three possible parameters: 1. Sets the length of time, in seconds, that the modem will wait for carrier before hanging up. The timer is started when the modem finishes dialing (originate), or after the billing delay in answer mode. In originate mode, the timer is reset upon detection of answer tone if allowed by country restrictions. Sets the length of time, in seconds, that modem will wait for silence when encountering the @ dial modifier before continuing with the next dial string parameter. If enabled by country options in the INF file, S7 sets the length of time, in seconds, that the modem will wait for dial tone when encountering a W dial modifier before continuing with the next dial string parameter. 1-255 seconds

Range:

Default: 50
S8 - Pause Time For Dial Delay
S8 sets the time, in seconds, that the modem must pause when the , dial modifier is encountered in the dial string. Range: 0-255 seconds Default: 2
S10 - Lost Carrier To Hang Up Delay
S10 sets the length of time, in tenths of a second, that the modem waits before hanging up after a loss of carrier. This allows for a temporary carrier loss without causing the local modem to disconnect. When register S10 is set to 255, the modem functions as if a carrier is always present. The actual interval the modem waits before disconnecting is the value in register S10 minus the value in register S9. Therefore, the S10 value must be greater than the S9 value or else the modem disconnects before it recognizes the carrier. Range: 1-255 tenths of a second* Default: 14 (1.4 seconds)* * In V.34 and V.90 modes, it is not easy to detect a loss of carrier within the S10 time because of the echo of the transmitted signal. It takes over 30 seconds to determine that carrier is actually lost and then the S10 value comes into effect. In V.21/V.22 modes, the register operates as described.

S11 - DTMF Tone Duration

S11 sets the duration of tones in DTMF dialing. This value has no effect on pulse dialing. Range: 50-255 milliseconds Default: 95 (95 milliseconds)
S12 - Escape Prompt Delay (EPD)
S12 defines the maximum period, in fiftieths of a second, allowed between receipt of the last character of the three escape character sequence from the DTE and sending of the OK result code to the DTE. If any characters are detected during this time, the OK will not be sent. Note that sending of the OK result code does not affect entry into command mode. (See 3.1.3.) Range: 0-255 1/50 of a second Default: 50 (1 second)

RING NO CARRIER

CONNECT 1200 NO DIALTONE BUSY NO ANSWER CONNECT 600 CONNECT 2400 CONNECT 4800 CONNECT 9600 CONNECT 7200 CONNECT 12000 CONNECT 14400 CONNECT 19200 CONNECT 38400 CONNECT 57600 CONNECT 115200 CONNECT 75TX/1200RX
Table 3-15. Result Code Definitions (Continued)
Code Message CONNECT 1200TX/75RX DELAYED BLACKLISTED FAX DATA +MRR: 300 +MRR: 1200/75 +MRR: 75/1200 +MRR: 1200 +MRR: 2400 +MRR: 4800 +MRR: 7200 +MRR: 9600 +MRR: 12000 +MRR: 14400 +MRR: 16800 +MRR: 19200 +MRR: 21600 +MRR: 24000 +MRR: 26400 +MRR: 28800 CONNECT 16800 CONNECT 21600 CONNECT 24000 CONNECT 26400 CONNECT 28800 +DR: ALT +DR: V.42B Meaning The modem has established a V.23 answer connection and line speed reporting is enabled. For X4, sent when a call fails to connect and the number dialed is considered 'delayed' due to country blacklisting requirements. For X4, sent when a call fails to connect and the number dialed is considered 'blacklisted'. A fax modem connection is established in a facsimile mode. A data modem connection is established in a facsimile mode. The modem has connected to the line at 300 bps and carrier reporting is enabled. (See S95 and Xn.) The V.23 backward channel carrier is detected and carrier reporting is enabled. (See S95 and Xn.) The V.23 forward channel carrier is detected and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 1200 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 2400 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 4800 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 7200 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 9600 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 12000 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 14400 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 16800 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 19200 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 21600 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 24000 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 26400 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 28800 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line, the DTE speed is 16800 bps and DTE speed reporting is enabled. The modem has connected to the line, the DTE speed is 21600 bps and DTE speed reporting is enabled. The modem has connected to the line, the DTE speed is 24000 bps and DTE speed reporting is enabled. The modem has connected to the line, the DTE speed is 26400 bps and DTE speed reporting is enabled. The modem has connected to the line and either the line speed is 28800 bps and DCE speed reporting is enabled, or the DTE speed is 28800 bps and DTE speed reporting is enabled. The modem has connected to the line in MNP Class 5 and +DR: message reporting is enabled. (See S95, Wn, and Xn.) The modem has connected to the line in V.42 bis and +DR: message reporting is enabled. (See S95, Wn, and Xn.)

Code 209 Message +MRR: 38667 +MRR: 41333 +MRR: 42667 +MRR: 45333 +MRR: 46667 +MRR: 49333 +MRR: 50667 +MRR: 53333 +MRR: 54667 Meaning The modem has connected to the line at 38667 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 41333 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 42667 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 45333 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 46667 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 49333 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 50667 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 53333 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 54667 bps and carrier reporting is enabled. (See S95 and Xn.)
Notes: 1. See Vn for result code selection, i.e., short form (result code) or verbose/extended (result message). 2. See Wn for extended connect message control. 3. See S95 for extended result code enabling options (which override some Wn commands). 4. See Xn for extended result code subset enabling options. 5. See +MR for modulation reporting control.
Fax Class 1 and Fax Class 1.0 Commands

Fax I/O Processing

The fax I/O interface supports asynchronous serial and parallel interfaces. The character format is 8 bits data, no parity, and 1 stop bit. Start and stop elements are removed from the transmit data and added to the receive data. Both transmit and receive data are buffered. Flow control using XON/XOFF or RTS/CTS is provided. Unique control character strings are identified, filtered, or reinserted into the I/O data stream. These control characters and their resultant action are described below.
DTE-to-Modem Transmit Data Stream
Characters Detected <DLE><data> <DLE><ETX> <DLE><DLE> Action Taken Delete <DLE><data> characters. Recognize as a string terminator and take appropriate action. Replace with single <DLE> character.
Modem-to-DTE Receive Data Stream
Characters Detected <DLE> Action Taken Insert extra <DLE> ahead of <DLE>. The modem also identifies the end of a frame by inserting <DLE><ETX> into the data stream after the FCS bytes.

Fax Mode Selection

Fax Class 1 and Fax Class 1.0 commands are identified in Table 4-1. Fax Class 1.0 includes all Fax Class 1 commands.

Example 2. This example illustrates tone generation using null elements. The command example is followed by a description of command execution. AT+VTS=1,2,[1000,1300,50],[800],9 1. 2. 3. 4. 5. Play DTMF 1 with a duration given by the +VTD command. Play DTMF 2 with a duration given by the +VTD command. Play tone pair at 1000 Hz and 1300 Hz with a duration of 500 ms. Play tone pair at 800 Hz with a duration given by the +VTD command. Play DTMF 9 with a duration given by the +VTD command.
Example 3. This example illustrates tone generation using null elements and periods of silence. The command example is followed by a description of command execution. AT+VTS=1,[,,50],2,[],9 1. 2. 3. 4. 5. Play DTMF 1 with a duration given by the +VTD command. Play silence with a duration of 500 ms. Play DTMF 2 with a duration given by the +VTD command. Play silence with a duration given by the +VTD command. Play DTMF 9 with a duration given by the +VTD command.
+VTX - Start Modem Transmit (Playback)
This command causes the modem to start the voice transmission process. Syntax +VTX Result Codes CONNECT ERROR The modem accepts the command. The modem is not connected to at least one off-hook telephone line or one non-telephone line.
+VGR - Voice Gain Receive (Record Gain)
This command causes the modem to set the gain for received voice samples. Syntax +VGR=<gain> Defined Values <gain> Decimal number between 0 and 255 corresponding to the gain.
Reporting Current or Selected Values Command: +VGR? Response: Example: +VGR: <gain> +VGR: 0 For the default setting.
Reporting Supported Range of Parameter Values Command: +VGR=? Response: Example: Result Codes OK ERROR <gain> = 0-255. Otherwise, or if not in Voice Mode. +VGR: <gain> range +VGR: 0-255
+VGT - Voice Gain Transmit (Playback Volume)
This command causes the modem to set the volume level. Syntax +VGT=<level> Defined Values <level> Decimal number (120-135) corresponding to the volume level.
Reporting Current or Selected Values Command: +VGT? Response: Example: +VGT: <level> +VGT: 128 For the default setting.
Reporting Supported Range of Parameter Values Command: +VGT=? Response: Example: Result Codes OK ERROR <level> = 120-135. Otherwise, or if not in Voice Mode. +VGT: <level> range +VGT: 120-135
+VIT - Voice Inactivity Timer (DTE/Modem)
This command sets the modems initial value for the DTE/modem inactivity timer. Syntax +VIT=<timer> Defined Values <timer> Decimal number(0 and 255) corresponding to the time in units of 1.0 second. A value of 0 disables the timer.
Reporting Current or Selected Values Command: +VIT? Response: Example: +VIT: <timer> +VIT: 0 For the default setting.
Reporting Supported Range of Parameter Values Command: +VIT=? Response: Example: Result Codes OK ERROR <timer> = 0-255. Otherwise, or if not in Voice Mode. +VIT: <timer> range +VIT: 0-255

Notes: 1. Internal and External Microphone are treated the same by the Modem device set. 2. Internal and External Speaker are treated the same by the Modem device set.
Reporting Current or Selected Values Command: +VLS? Response: Example: +VLS: <label> +VLS: 0 For the default setting.
Reporting Supported Range of Parameter Values Command: +VLS=? Response: Example: Result Codes OK ERROR <label> = 0-19, 30-33, 128-131. Otherwise. +VLS: <label> range +VLS: 0-19, 30-33, 128-131
+VRA - Ringback Goes Away Timer
This command sets the length of time the modem will wait between ringbacks during call origination before the modem can assume that the remote station has gone off hook. Syntax +VRA=<interval> Defined Values <interval> Decimal number (0-255) specifying the silence interval time in units of 0.10 second between the end of one ring interval and the start of the next ring interval. A value of 0 forces the modem to report the OK result code immediately after the first Ringback. The range is 0.01 to 60.0 seconds for <interval> = 1 to 255.
Reporting Current or Selected Values Command: +VRA? Response: Example: +VRA: <interval> +VRA: 50 (0.5 seconds) For the default setting.
Reporting Supported Range of Parameter Values Command: +VRA=? Response: Example: Result Codes OK ERROR <interval> = 0-255 Otherwise, or if not in Voice Mode. +VRA: (<interval> range) +VRA: (0-255)
+VRN - Ringback Never Appeared Timer
This command sets the length of time the modem will wait between ringbacks during call origination before the modem can assume that the remote station has gone off hook. Syntax +VRN=<interval> Defined Values <interval> Decimal number (0-60) specifying the time period, in units of 1.0 second, that the modem will wait for Ringback during call origination. A value of 0 forces the modem to report the OK result code immediately after dialing. The range is 1 to 60 seconds for <interval> = 1 to 60.
Reporting Current or Selected Values Command: +VRN? Response: Example: +VRN: <interval> +VRN: 10 (10 seconds) For the default setting.
Reporting Supported Range of Parameter Values Command: +VRN=? Response: Example: Result Codes OK ERROR <interval> = 0-255 Otherwise, or if not in Voice Mode. +VRN: (<interval> range) +VRN: (0-255)
+VSD - Silence Detection (Quiet and Silence)
This command causes the modem to set the silence detection sensitivity and the required period of silence before the modem reports silence detected at the end of a voice receive either with the Presumed End of Message (QUIT) or Presumed Hangup (SILENCE) event reports. Syntax +VSD=<sds>,<sdi> Defined Values <sds> Decimal number corresponding to the selected parameter. 0 Use +VSM silence compression setting and algorithm for long-term silence detection (if +VSM is in use) or proprietary silence compression setting and algorithm for long-term silence detection (if +VSM is not in use). Sets less aggressive long-term silence detection independent of presence or use of silence compression. Sets nominal long-term silence detection independent of presence or use of silence compression. Sets more aggressive long-term silence detection independent of presence or use of silence compression.

Reporting Supported Range of Parameter Values Command: +VSP=? Response: Example: Result Codes OK ERROR <mode> = 0 or 1. Otherwise, or if not in Voice Mode. +VSP: (<mode> range) +VSP: (0,1)
+VDX - Speakerphone Duplex Mode
This command selects speakerphone half-duplex or full duplex mode. Syntax +VDX=<mode> Defined Values <mode> Decimal number corresponding to the selected option. Reporting Current or Selected Values Command: +VDX? Response: Example: +VDX: <mode> +VDX: 0 For the default setting. The speakerphone mode is half duplex. The speakerphone mode is full duplex.
Reporting Supported Range of Parameter Values Command: +VDX=? Response: Example: Result Codes OK ERROR <mode> = 0 or 1. Otherwise, or if not in Voice Mode. +VDX: (<mode> range) +VDX: (0,1)

+VGM - Microphone Gain

This command causes the modem to set the microphone gain of the speakerphone function. Syntax +VGM=<gain> Defined Values <gain> Decimal number between 0 and 255 corresponding to the gain.
Reporting Current or Selected Values Command: +VGM? Response: Example: +VGM: <gain> +VGM: 130 For the default setting.
Reporting Supported Range of Parameter Values Command: +VGM=? Response: Example: Result Codes OK ERROR <gain> = 0-255. Otherwise, or if not in Voice Mode with speakerphone enabled (+VSP=1). +VGM: <gain> range +VGM: 0-255

+VGS - Speaker Gain

This command causes the modem to set the speaker gain of the speakerphone function. Syntax +VGS=<gain> Defined Values <gain> Decimal number between 0 and 255 corresponding to the gain.
Reporting Current or Selected Values Command: +VGS? Response: Example: +VGS: <gain> +VGS: 130 For the default setting.
Reporting Supported Range of Parameter Values Command: +VGS=? Response: Example: Result Codes OK ERROR <gain> = 0-255. Otherwise, or if not in Voice Mode with speakerphone enabled (+VSP=1). +VGS: <gain> range +VGS: 0-255
#UD Last Call Status Report...3-55 +FTH - Transmit Data with HDLC Framing. 4-11 +FTM - Transmit Facsimile.. 4-9 +FTS - Transmit Silence.. 4-7 +GCAP - Request Complete Capabilities List.. 3-10 +GCI - Country of Installation.. 3-11 +GMI - Request Manufacturer Identification.. 3-8 +GMM - Request Model Identification. 3-9 +GMR - Request Revision Identification.. 3-9 +GOI - Request Global Object Identification. 3-10 +GSN - Request Product Serial Number Identification.. 3-9 +IFC - DTE-Modem Local Flow Control. 3-23 +ILRR - DTE-Modem Local Rate Reporting.. 3-24 +IPR - Fixed DTE Rate.. 3-22 +ITF - Transmit Flow Control Thresholds. 3-54 +MR - Modulation Reporting Control. 3-36 +MS - Modulation Selection.. 3-33 +PCW - Call Waiting Enable.. 3-65 +PIG - PCM Upstream Ignore... 3-70 +PMH - Modem-on-Hold Enable.. 3-67 +PMHF - V.92 Modem-on-Hold Hook Flash.. 3-70 +PMHR - Initiate Modem-on-Hold.. 3-69 +PMHT Modem-on-Hold Timer. 3-68 +PQC - V.92 Phase 1 and Phase 2 Control.. 3-71 +PSS - Use Short Sequence.. 3-72 +VBT - Buffer Threshold Setting.. 5-20 +VCID - Caller ID (CID)... 3-3 +VDR - Distinctive Ring... 5-18 +VDT - Control Tone Cadence Reporting.. 5-19 +VDX - Speakerphone Duplex Mode.. 5-23 +VGM - Microphone Gain.. 5-24 +VGR - Voice Gain Receive (Record Gain).. 5-9 +VGS - Speaker Gain.. 5-25 +VGT - Voice Gain Transmit (Playback Volume). 5-10 +VIP - Voice Initialize All Parameters.. 5-5 +VIT - Voice Inactivity Timer (DTE/Modem. 5-11 +VNH - Automatic Hang-up Control.. 5-4 +VPR - Select DTE/Modem Interface Rate).. 5-21 +VRA - Ringback Goes Away Timer. 5-13 +VRID - Caller ID (CID)... 3-4 +VRN - Ringback Never Appeared Timer.. 5-14 +VRX - Start Modem Receive (Record).. 5-5 +VSD - Silence Detection (Quiet and Silence.. 5-15 +VSM - Compression Method Selection.. 5-16 +VSP - Speakerphone ON/OFF.. 5-22 +VTD - Beep Tone Duration Timer.. 5-17 +VTR - Start Voice Transmission and Reception (Voice Duplex)... 5-6 +VTS - Send Voice Tone(s)... 5-7 +VTX - Start Modem Transmit (Playback. 5-9

%C - Enable/Disable Data Compression..3-48 %E - Enable/Disable Line Quality Monitor, Auto-Retrain, and Auto-Rate Renegotiation..3-37 %TT - PTT Test Command...3-62
&C - RLSD Behavior...3-18 &D - DTR Behavior...3-19 &F - Set to Factory-Defined Configuration..3-6 &G - Select Guard Tone..3-30 &K - Flow Control...3-20 &M - Asynchronous/Synchronous Mode Selection..3-20 &P - Select Pulse Dial Make/Break Ratio.3-30 &Q - Sync/Async Mode..3-21 &T - Local Analog Loopback Test..3-6 &V - Display Current Configuration and Stored Profiles.3-31 &W - Store Current Configuration.3-31
*B - Display Blacklisted Numbers.3-32 *D - Display Delayed Numbers..3-32
+A8E - V.8 and V.8bis Operation Controls..3-49 +DR - Data Compression Reporting..3-47 +DS - Data Compression..3-45 +DS44 - V.44 Compression Select..3-46 +EB - Break Handling in Error Control Operation.3-40 +EFCS - 32-bit Frame Check Sequence..3-41 +ER - Error Control Reporting..3-42 +ES - Error Control and Synchronous Mode Selection.3-38 +ESA - Configure Synchronous Access Mode.3-52 +ESR - Selective Repeat..3-40 +ETBM - Call Termination Buffer Management..3-44 +FAE - Auto Answer Enable...4-6 +FAR - Adaptive Reception Control..4-13 +FCL - Carrier Loss Timeout..4-14 +FCLASS- Select Active Service Class..3-2 +FCLASS=1 - Select Facsimile Class 1 Mode.4-6 +FCLASS=1.0 - Select Facsimile Class 1.0 Mode.4-6 +FCLASS=8 - Select Voice Mode..5-4 +FDD - Double Escape Character Replacement.4-15 +FIT - DTE Inactivity Timeout..4-16 +FLO - Flow Control..4-19 +FMI - Request Manufacturer Identification.4-18 +FMM - Request Model Identification..4-18 +FMR - Request Revision Identification.4-18 +FPR - Fixed DTE Rate...4-17 +FRH - Receive Data with HDLC Framing..4-12 +FRM - Receive Data..4-10 +FRS - Receive Silence...4-8
A - Answer... 3-27 AT? - Read Selected S-Parameter.. 3-74 AT=x - Write to Selected S-Parameter.. 3-74

D - Dia... 3-25

Commands for Host-Processed Modems Reference Manual E
E - Command Echo...3-12 S1 - Ring Counter.. 3-75 S10 - Lost Carrier To Hang Up Delay.. 3-78 S11 - DTMF Tone Duration.. 3-78 S12 - Escape Prompt Delay (EPD).. 3-78 S18 - Test Timer.. 3-78 S2 - Escape Character.. 3-76 S210 - Maximum Symbol Rate.. 3-80 S29 - Flash Dial Modifier Time.. 3-79 S3 - Line Termination Character.. 3-76 S30 - Disconnect Inactivity Timer. 3-79 S4 - Response Formatting Character.. 3-76 S46 - Data Compression Control. 3-79 S5 - Command Line Editing Character.. 3-76 S6 - Wait Time for Dial Tone Before Blind Dialing, or After W Dial Modifier.. 3-77 S7 - Wait Time For Carrier After Dial, For Silence, or For Dial Tone After W Dial Modifier.. 3-77 S8 - Pause Time For Dial Delay.. 3-77 S95 - Extended Result Codes Control.. 3-80 Sn - Read/Write S-Parameter.. 3-75