CT-5071 ADSL2+ Router Users Manual
Version A1.2, February 10, 2006

261063-004

Preface
This manual provides information to network administrators. It covers the installation, operation and applications of the ADSL router.
The reader reading this manual is presumed to have a basic understanding of telecommunications. For product update, new product release, manual revision, software upgrade, technical support, etc., visit Comtrend Corporation at http://www.comtrend.com This document is subject to change without notice.

Warning

Before servicing or disassembling this equipment, always disconnect all power and telephone lines from the device. Use an appropriate power supply and a UL Listed telephone line cord. Specification of the power supply is clearly stated in Appendix B Specifications.

Copyright

Copyright 2006 Comtrend Corporation. All rights reserved. The information and messages contained herein are proprietary to Comtrend Corporation. No part of this document may be translated, transcribed, reproduced, in any form, or by any means without prior written permission by Comtrend Corporation.

Technical support

When you find the product out of service, or that it doesnt work properly, please contact technical support engineer for immediate servicing or email to INTsupport@comtrend.com

Table of Contents

CHAPTER 1 1.1 1.2 1.3 2.1 3.1 3.2

INTRODUCTION... 4

FEATURES... 4 APPLICATION... 5 FRONT PANEL LED INDICATORS... 6 INSTALLATION.... 7 HARDWARE INSTALLATION.... 7

CHAPTER 2

CHAPTER 3
LOGIN VIA THE WEB BROWSER.. 8
IP ADDRESS.... 8 LOGIN PROCEDURE.... 9 3.2.1 Default Settings... 10

CHAPTER 4

4.1 4.2 5.1 5.2

QUICK SETUP... 11

AUTO QUICK SETUP... 12 MANUAL QUICK SETUP... 12

CHAPTER 5

DEVICE INFO... 28
WAN..... 29 STATISTICS.... 30 5.2.1 LAN Statistics... 30 5.2.2 WAN Statistics... 32 5.2.3 ATM statistics... 33 5.2.4 ADSL Statistics.... 35 5.2.5 Route.... 37 5.2.6 ARP .... 37 5.2.7 DHCP.... 38

CHAPTER 6

6.1 6.2 6.3

ADVANCED SETUP... 39

WAN..... 39 LAN.... 40 NAT..... 41 6.3.1 Virtual Servers... 41 6.3.2 Port Triggering... 43 6.3.3 DMZ Host... 45 6.4 SECURITY.... 46 6.4.1 Parental Control... 46 6.4.2 MAC Filtering.... 47 6.4.3 IP Filtering... 49 6.5 ROUTING... 52 6.5.1 Default Gateway.... 52 6.5.2 Static Route.... 53 6.6 DNS.... 54 6.6.1 DNS Server.... 54

Dynamic DNS... 54

DSL.... 57

CHAPTER 7 CHAPTER 8

8.1.1 8.1.2 8.1.3
DIAGNOSTICS... 58 MANAGEMENT... 59
SETTINGS.... 59 Configuration Backup... 60 Configuration Restoration.. 60 Restore Default.... 61 8.2 SYSTEM LOG.... 63 8.3 INTERNET TIME... 65 8.4 ACCESS CONTROL.... 66 8.4.1 Services.... 67 8.4.2 Access IP Addresses... 68 8.4.3 Password Change... 69 8.5 UPDATE SOFTWARE.... 70 8.6 SAVE AND REBOOT.... 71
APPENDIX A: PIN ASSIGNMENTS... 72 APPENDIX B: SPECIFICATIONS... 73

Chapter 1

Introduction
The CT-5071 is a wired Local Area Network ADSL2+ router. One 10/100 Base-T Ethernet port provides wired LAN. The CT-5071 ADSL router provides state of the art security features such as Firewall and VPN pass through. The CT-5071 is designed for residential applications that require wired connectivity to an ADSL broadband network. The CT-5071 supports up to 4 contiguous virtual connections allowing for multiple simultaneous Internet connections.

Features

IP/MAC address filtering Static route/RIP/RIP v2 routing functions Dynamic IP assignment NAT/PAT IGMP Proxy DHCP Server/Relay/Client DNS Proxy Up to 4 VCs Web-based management Remote configuration and upgrade Configuration backup and restoration FTP/TFTP server

Manual Quick Setup

STEP 1: Click Quick Setup and un-tick the DSL Auto-connect checkbox to enable manual configuration of the connection type.
Un-tick this checkbox to enable manual setup and display the following screen.
STEP 2: Enter the Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI). Select Enable Quality Of Service if required. Click Next. STEP 3: Then, choose the Encapsulation mode.
STEP 4: Click Next to display the following screen. Choosing different connection types pops up different settings requests. Enter appropriate settings that are requested by your service provider. The following descriptions state each connection type setup separately.
PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE) 1. Select the PPP over ATM (PPPoA) or PPP over Ethernet (PPPoE) radio button and click Next. The following screen appears:
PPP USERNAME/PPP PASSWORD The PPP Username and the PPP password requirement are dependent on the particular requirements of the ISP or the ADSL service provider. The WEB user interface allows a maximum of 256 characters in the PPP user name and a maximum of 32 characters in PPP password. Encapsulation Mode Choosing different connection types provides different encapsulation modes. PPPoA- VC/MUX, LLC/ENCAPSULATION PPPoE- LLC/SNAP BRIDGING, VC/MUX MER- LLC/SNAP-BRIDGING, VC/MUX IPoA- LLC/SNAP-ROUTING, VC MUX Bridging- LLC/SNAP-BRIDGING, VC/MUX
Disconnect if no activity The CT-5071 can be configured to disconnect if there is no activity for a period of time by selecting the Disconnect if no activity check box. When the checkbox is ticked, you need to enter the inactivity timeout period. The timeout period ranges from 1 minute to 4320 minutes.
PPP IP Extension The PPP IP Extension is a special feature deployed by some service providers. Unless your service provider specially requires this setup, do not select it. The PPP IP Extension supports the following conditions: Allows only one PC on the LAN The public IP address assigned by the remote side using the PPP/IPCP protocol is actually not used on the WAN PPP interface. Instead, it is forwarded to the PCs LAN interface through DHCP. Only one PC on the LAN can be connected to the remote, since the DHCP server within the ADSL router has a single IP address to assign to a LAN device. NAPT and firewall are disabled when this option is selected. The ADSL router becomes the default gateway and DNS server to the PC through DHCP using the LAN interface IP address. The ADSL router extends the IP subnet at the remote service provider to the LAN PC. That is, the PC becomes a host belonging to the same IP subnet. The ADSL router bridges the IP packets between WAN and LAN ports, unless the packet is addressed to the routers LAN IP address.

2. Click Next to display the screen below. Enable IGMP Multicast checkbox: Tick the checkbox to enable IGMP multicast (proxy). IGMP (Internet Group Membership Protocol) is a protocol used by IP hosts to report their multicast group memberships to any immediately neighboring multicast routers. Enable WAN Service checkbox: Tick this item to enable the ADSL service. Untick it to stop the ADSL service. Service Name: This is user-defined.
3. After entering your settings, select Next. The following screen appears. This page allows the user to configure the LAN interface IP address, subnet mask and DHCP server. If the user would like this ADSL router to assign dynamic IP address, DNS server and default gateways to other LAN devices, select the button Enable DHCP server on the LAN to enter the starting IP address and end IP address and DHCP leased time.
4. Click Next to display the WAN Setup-Summary screen that presents the entire configuration summary. Click Save/Reboot if the settings are correct. Click Back if you wish to modify the settings.
5. After clicking Save/Reboot, the router will save the configuration to the flash memory, and reboot. The Web UI will not respond until the system is brought up again. After the system is up, the Web UI will refresh to the Device Info page automatically. The CT-5071 is ready for operation and the LEDs display as described in the LED description tables.
MAC Encapsulation Routing (MER) To 1. 2. 3. configure MER, do the following. Select Quick Setup and click Next. Enter the PVC Index provided by the ISP and click Next and click Next Select the MAC Encapsulation Routing (MER) radio button, and click Next. The following screen appears.
Enter information provided to you by your ISP to configure the WAN IP settings. Notice: DHCP can be enabled for PVC in MER mode if Obtain an IP address automatically is chosen. Changing the default gateway or the DNS effects the whole system. Configuring them with static values will disable the automatic assignment from DHCP or other WAN connection. If you configure static default gateway over this PVC in MER mode, you must enter the IP address of the remote gateway in the "Use IP address". The "Use WAN interface" is optional. The ISP should provide the values that must be entered in the entry fields.
4. Click Next to display the following screen appears.
Enable NAT checkbox: If the LAN is configured with a private IP address, the user should select this checkbox. The NAT submenu on the left side main panel will be displayed after reboot. The user can then configure NAT-related features after the system comes up. If a private IP address is not used on the LAN side, this checkbox should be de-selected to free up system resources for better performance. When the system comes back after reboot, the NAT submenu will not be displayed on the left main panel. Enable Firewall checkbox: If the firewall checkbox is selected, the firewall submenu on the left side main panel will be displayed after system reboot. The user can then configure firewall features after the system comes up. If firewall is not used, this checkbox should be de-selected to free up system resources for better performance. When system comes back after reboot, the Firewall submenu will not be displayed on the left main panel. Enable IGMP Multicast: Tick the checkbox to enable IGMP multicast (proxy). IGMP (Internet Group Membership Protocol) is a protocol used by IP hosts to report their multicast group memberships to any immediately neighboring multicast routers. Enable WAN Service: Tick the checkbox to enable the WAN (ADSL) service. If this item is not selected, you will not be able to use the ADSL service. Service Name: This is User-defined.

5. Upon completion, click Next. The following screen appears.
The Device Setup page allows the user to configure the LAN interface IP address and DHCP server. If the user would like this ADSL router to assign dynamic IP addresses, DNS server and default gateway to other LAN devices, select the radio box Enable DHCP server on the LAN to enter the starting IP address and end IP address and DHCP lease time. This configures the router to automatically assign IP addresses, default gateway address and DNS server addresses to each of your PCs. Note that the routers default IP address is 192.168.1.1 and the default private address range provided by the ISP server in the router is 192.168.1.2 through 192.168.1.254. 6. After entering your settings, select Next to display the following screen. The WAN Setup-Summary screen presents the entire configuration summary. Click Save/Reboot if the settings are correct. Click Back if you wish to modify the settings. The following screen will be displayed.
After clicking Save/Reboot, the router will save the configuration to the flash memory, and reboot. The Web UI will not respond until the system is brought up again. After the system is up, the Web UI will refresh to the Device Info page automatically. The CT-5071 is ready for operation and the LEDs display as described in the LED description tables.
IP Over ATM (IPoA) To 1. 2. 3. 4. configure IP Over ATM, Select Quick Setup and click Next. Enter the PVC Index and click Next. Type the VPI and VCI values provided by the ISP and click Next. Select the IP over ATM (IPoA) radio button and click Next. The following screen appears.
Notice that DHCP is not supported over IPoA. The user must enter the IP address or WAN interface for the default gateway setup, and the DNS server addresses provided by the ISP. 5. Click Next. The following screen appears.
Enable NAT checkbox If the LAN is configured with a private IP address, the user should select this checkbox. The NAT submenu on the left side main panel will be displayed after reboot. The user can then configure NAT-related features after the system comes up. If a private IP address is not used on the LAN side, this checkbox should be deselected to free up system resources for better performance. When the system comes back after reboot, the NAT submenu will not be displayed on the left main panel. Enable Firewall checkbox If the firewall checkbox is selected, the firewall submenu on the left side main panel will be displayed after system reboot. The user can then configure firewall features after the system comes up. If firewall is not used, this checkbox should be deselected to free up system resources for better performance. When system comes back after reboot, the Firewall submenu will not be displayed on the left main panel. Enable Quality Of Service Enabling IP QoS for a PVC improves performance for selected classes of applications. However, since IP QoS also consumes system resources, the number of PVCs will be reduced consequently. Use Advanced Setup/Quality of Service to assign priorities for the applications. 6. Click Next to display the following screen. The Device Setup page allows the user to configure the LAN interface IP address and DHCP server if the user would like this ADSL router to assign dynamic IP addresses, DNS server and default gateway to other LAN devices. Select the button Enable DHCP server on the LAN to enter the starting IP address and end IP address and DHCP lease time.

The user must configure the IP Address and the Subnet Mask. To use the DHCP service on the LAN, select the Enable DHCP server checkbox, and enter the Start IP addresses, the End IP address and DHCP lease time. This configures the router to automatically assign IP addresses, default gateway address and DNS server addresses to each of your PCs. Note that the routers default IP address is 192.168.1.1 and the default private address range provided by ISP server in the router is 192.168.1.2 through 192.168.1.254. 7. The WAN Setup-Summary screen presents the entire configuration summary. Click Save/Reboot if the settings are correct. Click Back if you wish to modify the settings. The following screen will be displayed.
9. After clicking Save/Reboot, the router will save the configuration to the flash memory, and reboot. The Web UI will not respond until the system is brought up again. After the system is up, the Web UI will refresh to the Device Info page automatically. The CT-5071 is ready for operation and the LEDs display as described in the LED description tables.
Bridging Select the bridging mode. To configure Bridging, do the following. 1. 2. 3. 4. Select Quick Setup and click Next. Enter the PVC Index and click Next. Type in the VPI and VCI values provided by the ISP and click Next. Select the Bridging radio button and click Next. The following screen appears. To use the bridge service, tick the checkbox, Enable Bridge Service, and enter the service name.
5. Click the Next button to continue. Enter the IP address for the LAN interface. The default IP address is 192.168.1.1. The LAN IP interface in bridge operating mode is needed for local users to manage the ADSL router. Notice that there is no IP address for the WAN interface in bridge mode, and the remote technical support cannot access the ADSL router.
6. Click the Next button The following screen will be displayed.
The WAN Setup-Summary screen presents the entire configuration summary. Click Save/Reboot if the settings are correct. Click Back if you wish to modify the settings.

Chapter 5

Device Info
After login, the Device Info screen appears as shown.
Note: The selections available on the left side of menu are based upon the configured connection.
Click WAN on the Device Info menu bar to display the configured PVC(s) and the status.
VPI/VCI Con. ID Category Service Interface Protocol IGMP QoS State Status IP Address
Shows the values of the ATM VPI/VCI Shows the connection ID Shows the ATM service classes Shows the name for WAN connection Shows connection interfaces Shows the connection type, such as PPPoE, PPPoA, etc. Shows the statue of the IGMP function Shows the statue of the QoS function Shows the connection state of the WAN connection Lists the status of DSL link Shows IP address for WAN interface

Statistics

Selection of the Statistics screen provides statistics for the Network Interface of LAN, WAN, ATM and ADSL. All statistics screens are updated every 15 seconds.
5.2.1 LAN Statistics The Network Statistics screen shows interface statistics for ATM AAL5 interface and Ethernet interfaces. (The Network Statistics screen shows interface statistics for LAN of Ethernet interfaces. This shows byte transfer, packet transfer, Error and Drop statistics for the LAN interface.)

5.2.2 WAN Statistics

Service VPI/VCI Protocol Interface Received/Transmitted Bytes Pkts Errs Drops -
Shows the service type Shows the values of the ATM VPI/VCI Shows the connection type, such as pppoe, PPPoA, etc. Shows connection interfaces Rx/TX (receive/transmit) packet in Byte Rx/TX (receive/transmit) packets Rx/TX (receive/transmit) the packets which are errors, Rx/TX (receive/transmit) the packets which are dropped
5.2.3 ATM statistics The following figure shows the ATM statistics screen.
ATM Interface Statistics Field Description In Octets Number of received octets over the interface Number of transmitted octets over the interface OUT OCTETS In Errors In Number of cells dropped due to uncorrectable HEC errors Unknown Number of received cells discarded during cell header validation, including cells with unrecognized VPI/VCI values, and cells with invalid cell header patterns. If cells with undefined PTI values are discarded, they are also counted here. Hec Errors Number of cells received with an ATM Cell Header HEX error Invalid Vpi Vci Errors Number of cells received with an unregistered VCC address. Port Not Enabled Errors Number of cells received on a port that has not been enabled. PTI Errors Number of cells received with an ATM header Payload Type Indicator (PTI) error Idle Cells Number of idle cells received Circuit Type Errors Number of cells received with an illegal circuit type Oam RM CRC Errors Number of OAM and RM cells received with CRC errors GFC Errors Number of cells received with a non-zero GFC.

In In In In In In In In

ATM AAL5 Layer Statistics over ADSL interface Field In Octets Out Octets In Ucst Pkts Out Ucast Pkts In Errors Out Errors In Discards Out Discards Description Number of received AAL5/AAL0 CPCS PDU octets Number of received AAL5/AAL0 CPCS PDUs octets transmitted Number of received AAL5/AAL0 CPCS PDUs passed to a higher-layer for transmission Number of received AAL5/AAL0 CPCS PDUs received from a higher layer for transmissions Number of received AAL5/AAL0 CPCS PDUs received that contain an error. The types of errors counted include CRC32 errors. Number of received AAL5/AAL0 CPCS PDUs that could be transmitted due to errors. Number of received AAL5/AAL0 CPCS PDUs discarded due to an input buffer overflow condition. This field is not currently used

To add a Trigger Port, simply click the Add button. The following will be displayed.
Select an Application Or Custom Application Trigger Port Start Trigger Port End
User should select the application from the list. Or User can enter the name of their choice. Enter the starting trigger port number (when you select custom application). When an application is selected the port ranges are automatically configured. Enter the ending trigger port number (when you select custom application). When an application is selected the port ranges are automatically configured. User can select from: TCP, TCP/UDP or UDP. Enter the starting open port number (when you select custom application). When an application is selected the port ranges are automatically configured. Enter the ending open port number (when you select custom application). When an application is selected the port ranges are automatically configured. User can select from: TCP, TCP/UDP or UDP.
Trigger Protocol Open Port Start

Open Port End

Open Protocol

6.3.3 DMZ Host

Note: This option is not available for Bridge mode. The DSL router will forward IP packets from the WAN that do not belong to any of the applications configured in the Virtual Servers table to the DMZ host computer.
Enter the computer's IP address and click "Apply" to activate the DMZ host. Clear the IP address field and click "Apply" to deactivate the DMZ host.

6.4 Security

6.4.1 Parental Control
Click on Parental Control in the menu bar.
Then click Add.The following screen will be displayed.
Input your User Name. Select the day of the week and the time that you want the restriction in place (as shown below).
Then click Save/Apply. The following screen will be displayed.

6.4.2 MAC Filtering

Mac Filtering is only available for Bridged mode. Each network device has a unique MAC address. You can block or forward the packets based on the MAC addresses. The MAC Filtering Setup screen allows setting up the MAC filtering policy and the MAC filtering rules. MAC Filtering is only effective on ATM PVCs configured in Bridge mode. The policy FORWARDED means that all MAC layer frames will be FORWARDED except those matching with any of the specified rules in the following table. BLOCKED means that all MAC layer frames will be BLOCKED except those matching with any of the specified rules in the following table. The default is FORWARD; you change by clicking the Change Policy button.

Choose Add or Remove to configure MAC filtering rules. The following screen pops up when you click Add. Create a filter to identify the MAC layer frames by specifying at least one condition below. If multiple conditions are specified, all of them take effect. Click Apply to save and activate the filter.
Option Protocol type Destination MAC Address Source MAC Address
Description PPPoE, IPv4, IPv6, AppleTalk, IPX, NetBEUI, IGMP Define the destination MAC address Define the source MAC address
Set Multicast From Interface To Interface
Click this button, it will automatically set the multicast MAC address. Select the incoming packet interface Select the outgoing packet interface

6.4.3 IP Filtering

This option is only available for PPPoE and PPPoA. IP filtering allows you to create a filter rule to identify outgoing/incoming IP traffic by specifying a new filter name and at least one condition below. All of the specified conditions in this filter rule must be satisfied for the rule to take effect. Click 'Save/Apply' to save and activate the filter. Outgoing
To add a filtering rule, simply click the Add button. The following screen will be displayed.
Filter Name Protocol Source IP address Source Subnet Mask Source Port (port or port:port) Destination IP address Destination Subnet Mask Destination port (port or port:port)
Type a name for the filter rule. User can select from: TCP, TCP/UDP, UDP or ICMP. Enter source IP address. Enter source subnet mask. Enter source port number. Enter destination IP address. Enter destination subnet mask. Enter destination port number.

Incoming

To configure the parameters, please reference Outgoing table above.

Routing

The Routing dialog box allows you to configure Default gateway, Static Route and RIP.
6.5.1 Default Gateway If Enable Automatic Assigned Default Gateway checkbox is selected, this router will accept the first received default gateway assignment from one of the PPPoA, PPPoE or MER/DHCP enabled PVC(s). If the checkbox is not selected, enter the static default gateway AND/OR a WAN interface. Click 'Save/Apply' button to save it.
NOTE: If changing the Automatic Assigned Default Gateway from unselected to selected, You must reboot the router to get the automatic assigned default gateway.
6.5.2 Static Route Choose Static Route to display the Static Route screen. The Static Route screen lists the configured static routes, and allows configuring static routes. Choose Add or Remove to configure the static routes.
To add static route, click the Add button to display the following screen. Enter the destination network address, subnet mask, gateway AND/OR available WAN interface then click Save/Apply to add the entry to the routing table.

Chapter 7

Diagnostics
The Diagnostics menu provides feedback on the connection status of the CT-5071 and the ADSL link. The individual tests are listed below. If a test displays a fail status, click Rerun Diagnostic Tests at the bottom of this page to make sure the fail status is consistent. If the test continues to fail, click Help and follow the troubleshooting procedures.
Test Description Ethernet Connection Pass: indicates that the Ethernet interface from your computer is connected to the LAN port of your DSL Router. A flashing or solid green LAN LED on the router also signifies that an Ethernet connection is present and that this test is successful. Fail: Indicates that the DSL Router does not detect the Ethernet interface on your computer. ADSL Pass: Indicates that the DSL modem has detected a DSL Synchronization signal from the telephone company. A solid WAN LED on the router also indicates the detection of a DSL signal from the telephone company. Fail: indicates that the DSL modem does not detect a signal from the telephone companys DSL network. The WAN LED will continue to flash green.

Chapter 8

Management
The Management section of the CT-5071 supports the following maintenance functions and processes: System log Update software Restore Settings Local Access User Access Remote Access

Settings

The Settings option allows you to back up your settings to a file, retrieve the setting file, and restore the settings.
8.1.1 Configuration Backup The Backup option under Management>Settings, save your router configurations to a file on your PC. Click BACKUP Settings in the main window. You will be prompted to define the location of the backup file to save. After choosing the file location, click Backup Settings. Te file will then be saved to the assigned location.
8.1.2 Configuration Restoration The Update option under Management>Settings update your router settings using your saved files.
8.1.3 Restore Default Clicking the Restore Default Configuration option in the Restore Settings screen can restore the original factory installed settings.
NOTE: This entry has the same effect as the hardware reset-to-default button. The CT-5071 board hardware and the boot loader support the reset to default button. If the reset button is continuously pushed for more than 5 seconds until the power indicator blinks, the boot loader will erase the entire configuration data saved on the flash memory. NOTE: Restoring system settings, requires a system reboot. This necessitates that the current Web UI session be closed and restarted. Before restarting, the connected PC must be configured with a static IP address in the 192.168.1.x subnet in order to configure the CT-5071.

Default settings The CT-5071 default settings are LAN port IP= 192.168.1.1, subnet mask = 255.255.255.0 Local user name: root Password: 12345
After the Restore Default Configuration button is selected, the following screen appears. Close the DSL Router Configuration window and wait for 2 minutes before reopening your web browser. If necessary, reconfigure your PC's IP address to match your new configuration.

System Log

The System Log option under Management>Settings allows you to view the system events log, or to configure the System Log options. The default setting of system log is disabled. Follow the steps below to enable and view the system log. 1. Click Configure System Log to display the following screen.
2. Select from the desired Log options described in the following table, and then click Save/Apply.

Option Log Log level

Display Level Mode
Description Indicates whether the system is currently recording events. The user can enable or disable event logging. By default, it is disabled. To enable it, tick Enable and then Apply button. Allows you to configure the event level and filter out unwanted events below this level. The events ranging from the highest critical level Emergency down to this configured level will be recorded to the log buffer on the CT-5071 SDRAM. When the log buffer is full, the newer event will wrap up to the top of the log buffer and overwrite the old event. By default, the log level is Debugging, which is the lowest critical level. The following log levels are Emergency = system is unusable Alert = action must be taken immediately Critical = critical conditions Error = Error conditions Warning = normal but significant condition Debugging = debug-level messages Emergency is the most serious event level, whereas Debugging is the least important. For instance, if the log level is set to Debugging, all the events from the lowest Debugging level to the most critical level Emergency level will be recorded. If the log level is set to Error, only Error and the level above will be logged. Allows the user to select the logged events and displays on the View System Log page for events of this level and above to the highest Emergency level. Allows you to specify whether events should be stored in the local memory, or be sent to a remote syslog server, or both simultaneously. If remote mode is selected, view system log will not be able to display events saved in the remote syslog server. When either Remote mode or Both mode is configured, the WEB UI will prompt the user to enter the Server IP address and Server UDP port.

3. Click View System Log. The results are displayed as follows.

Internet Time

The Internet Time option under Management menu bar configures the Modems time. To automatically synchronize with Internet timeservers, tick the corresponding box displayed on the screen. Then click Save/Apply.

Access Control

The Access Control option under Management menu bar configures the accessrelated parameters, including three parts: Services, IP Address, and Passwords.
8.4.1 Services The Services option limits or opens the access services over the LAN or WAN. These services are provided FTP, HTTP, ICMP, , SSH (Security Socket Share), TELNET, and TFTP. Enable the service by checking the item in the corresponding checkbox, and then click Save/Apply.
8.4.2 Access IP Addresses The IP Addresses option limits the access by IP address. If the Access Control Mode is enabled, only the allowed IP addresses can access the router. Before you enable it, configure the IP addresses by clicking the Add button. Enter the IP address and click Apply to allow the PC with this IP address managing the DSL Router.

8.4.3 Password Change

To change the current password, do the following. Select Username root. Enter Old Password and New Password. Then enter the new password again in the Confirm Password box to verify the new password. Then, click Save/Apply button.

Update software

The Update Software screen allows you to obtain an updated software image file from your ISP. Manual software upgrades from a locally stored file can be performed using the following screen.
Step 1: Obtain an updated software image file from your ISP. Step 2: Enter the path to the image file location in the box below or click the Browse button to locate the image file. Step 3: Click the "Update Software" button once to upload the new image file. NOTE: The update process takes about 2 minutes to complete, and your DSL Router will reboot.

Dimensions 92mm (W) x 34mm (H) x 114mm (D) Certifications FCC Part 15 class B, FCC Part 68, CE Note: Specifications are subject to change without notice

CT-5071 / CT-5071E

ADSL2+ Ethernet Router

Description

The CT-5071 / CT5071E series ADSL2+ compact and high performance Ethernet router provides one 10/100 Ethernet Interface and one ADSL line interface to access the Internet, incorporating LAN or Video on demand over one ordinary telephone line, at speeds of up to 24 Mbps. It also has full routing capabilities to segment/route IP protocol, and supports advanced security functions. The CT-5071 is for ADSL over POTS (Annex A) while the CT-5071E is optional for ADSL over ISDN (Annex B). The CT-5071 series can operate in router or bridge mode. In addition, the CT-5071 series protects all of your networked computers with advanced security technologies, such as virtual private networks (VPNs) with PPTP passthrough, L2TP passthrough, IPSec passthrough, and firewall.

Features

CT-5071 (Annex A) & CT-5071E (Annex B) optional UPnP IP filtering SPI (Stateful Packet Inspection) DoS protection Static route/RIP/RIP v2 routing functions Dynamic IP assignment NAT/PAT IGMP Proxy DHCP Server/Relay/Client DNS Proxy Auto PVC configuration Up to 4 VCs Web-based management Remote configuration and upgrade Configuration backup and restoration FTP/TFTP server

Applications Diagram

Specifications

Hardware Interface

RJ-11 X1 for ADSL, RJ-45 X 1 for LAN, Reset Button X 1, Power switch X 1

WAN Interface

ADSL standard G.992.5 (ADSL2+) G.992.3 (ADSL2) G.DMT ITU-T G.992.5, ITU-T G.992.3, ITU-T G.992.1, ANSI T1.413 Issue 2 Downstream : 24 Mbps Upstream : 1.3 Mbps Downstream : 12 Mbps Upstream : 1.3 Mbps Downstream : 8 Mbps Upstream : 832 Kbps IEEE 802.3, IEEE 802.3u Auto-sense Yes

LAN Interface

Standard 10/100 BaseT MDI/MDX support

ATM Attributes

RFC 2364 (PPPoA), RFC 2684 (RFC 1483) Bridge/Route; RFC 2516 (PPPoE); RFC 1577 (IPoA) Support PVCs 4 AAL type AAL5 ATM service class UBR/CBR/VBR ATM UNI support UNI3.1/4.0 OAM F4/F5 Yes

Management

Telnet, Web-based management, Configuration backup and restoration Software upgrade via HTTP, TFTP server, or FTP server

Bridge Functions

Transparent bridging and learning VLAN support Spanning Tree Algorithm IGMP Proxy IEEE 802.1d Yes Yes Yes

Routing Functions

Static route, RIP, and RIPv2, NAT/PAT, DHCP Server/DHCP Relay, DNS Proxy, ARP

Security Functions

Authentication protocols PAP, CHAP, TCP/IP/Port filtering rules, Port triggering/Forwarding, Packet and MAC address filtering, access control

Application Passthrough

PPTP, L2TP, IPSec, VoIP, Yahoo messenger, ICQ, RealPlayer, NetMeeting, MSN, X-box, etc

Power Supply

External power adapter 110 Vac or 220 Vac 0 ~ 50 degrees Celsius 5 ~ 90% (non-condensing)

Environment Condition

Operating temperature Relative humidity

Dimensions

92 mm (W) x 34 mm (H) x 114 mm (D)

Certifications

FCC Part 15 class B, FCC Part 68, CE
Note: Specifications are subject to change without notice.
Taiwan: 3F-1, No.10, Lane 609, Chung Hsin Road Section 5, San Chung, Taipei, Taiwan 24159 Tel: 886-2-2999-8261 Fax: 886-2-2999-8497 China: NO.88 East QianJin Road,Kunshan City,JiangSu,China Tel: 86-512-57383156, 86-512-57383157, 86-512-57384515 Fax: 86-512-57383155 Spain: Edif. Amrica II C/Prcion,7 portal 3 bajo H 28023 Madrid, Spain Tel: 34-917990403 Fax: 34-913510999 UK: 566 Chiswick High Road Building 3, Chiswick Park Chiswick London, W4 5YA UK Tel: 44-0-8453701031 Fax: 44-0-8453701032 France: 87, Rue du Gouverneur Gnral Flix Ebou 92130 Issy-les-Moulineaux, France Tel: 33-1-70715700 Fax: 33-1-70715701 Czech Republic: TOKOVO Jankovcova 1518/2, 170 00, Prague 7, Czech Republic Tel: 420-266-782040 Fax: 420-266-782990 USA & Canada: 16 Goodyear, Suite 120, Irvine, CA 92618 Tel: 1-949-7539640 Fax: 1-949-7539020 Brazil: Al. Campinas, 977 - 7. Floor - Room 71 / 72 - Jardins Zip Code: 01404-001 - So Paulo - SP - Brazil Tel: 11 3052-2295 Fax: 11 3052-2295 Mexico Mariano Escobedo 396 Office 503 Colonia Anzures, Deleg. Miguel Hidalgo 11590 Distrito Federal Mxico Tel: +52 (55) 4623-1516