Comtrend Corporation CT-5611T User manual

CT-5611T
ADSL2+ Combo Router
User Manual
Version A1.4, October 3, 2007
261070-011

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Preface
This manual provides information related to the installation, operation, and
application of this device. The individual reading this manual is presumed to have a
basic understanding of telecommunications terminology and concepts.
If you find the product to be inoperable or malfunctioning, please contact technical
support for immediate service by email at INT[email protected]
For product update, new product release, manual revision, or software upgrades,
please visit our website at http://www.comtrend.com
Important Safety Instructions
With reference to unpacking, installation, use and maintenance of your electronic
device, the following basic guidelines are recommended:
•Do not use or install this product near water, to avoid fire or shock hazard. For
example, near a bathtub, kitchen sink or laundry tub, or near a swimming pool.
Also, do not expose the equipment to rain or damp areas (e.g. a wet basement).
•Do not connect the power supply cord on elevated surfaces. Allow it to lie freely.
There should be no obstructions in its path and no heavy items should be placed
on the cord. In addition, do not walk on, step on or mistreat the cord.
•Use only the power cord and adapter that are shipped with this device.
•To safeguard the equipment against overheating, make sure that all openings in
the unit that offer exposure to air are not blocked.
•Avoid using a telephone (other than a cordless type) during an electrical storm.
There may be a remote risk of electric shock from lightening. Also, do not use
the telephone to report a gas leak in the vicinity of the leak.
•Never install telephone wiring during stormy weather conditions.
CAUTION:
•To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line
cord.
•Always disconnect all telephone lines from the wall outlet before servicing or
disassembling this equipment.
WARNING
Disconnect the power line from the device before servicing.
Power supply specifications are clearly stated in Appendix B.
Copyright
Copyright©2008 Comtrend Corporation. All rights reserved. The information
contained herein is proprietary to Comtrend Corporation. No part of this document
may be translated, transcribed, reproduced, in any form, or by any means without
prior written consent of Comtrend Corporation.
NOTE: This document is subject to change without notice.

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Table of Contents
CHAPTER 1 INTRODUCTION................................................................................. 4
1.1 FEATURES ............................................................................................................ 4
1.2 APPLICATION ....................................................................................................... 5
1.3 FRONT PANEL LED INDICATORS ......................................................................... 6
CHAPTER 2 INSTALLATION.................................................................................. 8
2.1 HARDWARE INSTALLATION.................................................................................. 8
2.2 USB DEVICE DRIVER AUTO-RUN INSTALLATION ................................................ 9
2.3 USB DRIVER MANUAL INSTALLATION(64BIT OS) ............................................ 11
2.4 UN-INSTALLING THE USB DRIVER .................................................................... 17
CHAPTER 3 LOGIN VIA THE WEB BROWSER................................................ 21
3.1 IP ADDRESS ....................................................................................................... 21
3.2 LOGIN PROCEDURE ............................................................................................ 22
3.3 DEFAULT SETTINGS ........................................................................................... 24
CHAPTER 4 QUICK SETUP................................................................................... 25
4.1 WAN................................................................................................................. 26
4.2 STATISTICS ........................................................................................................ 27
4.2.1 LAN Statistics............................................................................................ 28
4.2.2 WAN Statistics........................................................................................... 29
4.2.3 ATM statistics............................................................................................ 30
4.2.4 ADSL Statistics.......................................................................................... 32
4.3 ROUTE ............................................................................................................... 34
4.4 ARP................................................................................................................... 34
4.5 DHCP................................................................................................................ 35
CHAPTER 5 QUICK SETUP................................................................................... 36
5.1 AUTO QUICK SETUP........................................................................................... 37
5.2 MANUAL QUICK SETUP...................................................................................... 37
5.2.1 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)..................... 39
5.2.2 MAC Encapsulation Routing (MER) ........................................................ 44
5.2.3 IP Over ATM............................................................................................. 48
5.2.4 Bridging .................................................................................................... 52
CHAPTER 6 ADVANCED SETUP.......................................................................... 54
6.1 WAN................................................................................................................. 55
6.2 LAN .................................................................................................................. 56
6.3 NAT .................................................................................................................. 58
6.3.1 Virtual Servers .......................................................................................... 58
6.3.2 Port Triggering......................................................................................... 60
6.3.3 DMZ Host.................................................................................................. 62
6.3.4 ALG........................................................................................................... 63
6.4 SECURITY........................................................................................................... 64
6.4.1 IP Filtering................................................................................................ 64

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6.4.2 Parental Control....................................................................................... 67
6.5 QUALITY OF SERVICE......................................................................................... 68
6.6 ROUTING............................................................................................................ 70
6.6.1 Default Gateway ....................................................................................... 70
6.6.2 Static Route............................................................................................... 71
6.7 DNS................................................................................................................... 72
6.7.1 DNS Server................................................................................................ 72
6.7.2 Dynamic DNS............................................................................................ 72
6.8 DSL................................................................................................................... 74
6.9 PORT MAPPING .................................................................................................. 75
6.10 CERTIFICATE...................................................................................................... 78
6.10.1 Local ......................................................................................................... 78
6.10.2 Trusted CA................................................................................................ 80
CHAPTER 7 DIAGNOSTICS................................................................................... 81
CHAPTER 8 MANAGEMENT ................................................................................ 82
8.1 SETTINGS ........................................................................................................... 82
8.1.1 Configuration Backup............................................................................... 83
8.1.2 Update Settings......................................................................................... 83
8.1.3 Restore Default ......................................................................................... 84
8.2 SYSTEM LOG...................................................................................................... 85
8.3 TR-069 CLIENT ................................................................................................. 87
8.4 INTERNET TIME.................................................................................................. 89
8.5 ACCESS CONTROL.............................................................................................. 89
8.5.1 Services..................................................................................................... 90
8.5.2 IP Addresses.............................................................................................. 91
8.5.3 Passwords................................................................................................. 92
8.6 UPDATE SOFTWARE ........................................................................................... 93
8.7 SAVE AND REBOOT ............................................................................................ 94
APPENDIX A: PIN ASSIGNMENTS........................................................................... 95
APPENDIX B: SPECIFICATIONS.............................................................................. 96

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Chapter 1 Introduction
The CT-5611T ADSL2+ compact and high performance combo router provides one
10/100 Ethernet Interface and one USB interface, offering ADSL connectivity at
speeds of up to 24 Mbps. It also has full routing capabilities to segment/route IP
protocol, and supports advanced security functions.
1.1 Features
•IP filtering
•SPI (Stateful Packet Inspection)
•DoS protection
•Static route
•Dynamic IP assignment
•NAT/PAT
•IGMP Proxy
•DHCP Server/Relay/Client
•DNS Proxy
•Auto PVC configuration
•Up to 8 VCs
•Web-based management Remote configuration and upgrade
•Configuration backup and restoration
•FTP/TFTP server
•TR-68
•TR-69

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1.2 Application
The following diagram depicts the application of the CT-5611T.

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1.3 Front Panel LED Indicators
The front panel LEDs are shown in the picture below, followed by an explanation in
the table below.
LED Color Mode Function
On The router is powered up.
Off The router is powered down.
POWER
Green
Red On
POST (Power On Self Test) fail (not
bootable) or router failure which could be
any error of internal sequence or state
that will not allow the router to connect
to the DSLAM, or send data.
On The ADSL link is established.
Off The ADSL link is not established.
ADSL LINK
Green
Green
Blink
The ADSL link is training or some traffic
is passing through ADSL.

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On A USB link is established.
Off A USB link is not established.USB
Green
Green Blink Data transmitting or receiving over USB.
On Normal operating status.
Off The ADSL link is terminated.
Green
Green Blink Data transmitting or receiving over ADSL.
INTERNET
Red On
Device attempted to become IP connected
and failed (no DHCP response, no PPPoE
response, PPPoE authentication failed, no
IP address from IPCP, etc.)
For bridged mode, the indicator light is off.
If the IP or PPPoE session is dropped due
to an idle timeout, the light will remain
green if an ADSL connection is still
present. If the session is dropped for any
other reason, the light is turned off. The
light will turn red when it attempts to
reconnect and DHCP or PPPoE fails.
On An Ethernet Link is established.
Off An Ethernet Link is not established.LAN
Green
Green Blink Data transmitting or receiving over LAN.

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Chapter 2 Installation
2.1 Hardware Installation
Follow the instructions below to complete the hardware connections.
Connection to LINE port
If you wish to connect both the router and a telephone, connect the LINE port to a
POTS splitter with a RJ11 connection cable.
Connection to LAN port
To connect to a hub or PC, use a RJ45 cable. The port is auto-sensing MDI/X and
either straight-through cable or crossover cable can be used.
Connection to USB port
Connect the USB port to a PC with a standard USB cable.
Connection to Power
Connect the Power jack to the shipped power cord. Attach the power adapter to the
wall outlet or other AC source.
After all connections have been made, turn the power-switch to the on position. After
powering on, the router performs a self-test. Wait for a few seconds until the test is
finished, then the router will be ready to operate.
Reset Button
Restore the default parameters of the router by holding down the device’s Reset button
until the LED’s start blinking simultaneously (about 5 seconds). After the device has
rebooted successfully, and if the connection is established, the LAN LED, ADSL LED or
USB LED will display in green, depending on the connection type.
Caution 1: If the router fails to power up, or it malfunctions, first verify that the
power supply is connected correctly. Then power it on again. If the
problem persists, contact our technical support engineers.
Caution 2: Before servicing or disassembling this equipment always disconnect
all power cords and telephone lines from the wall outlet.
Reset Button

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2.2 USB Device Driver Auto-run Installation
Before you connect your router’s USB cable to your PC, you must load the ADSL USB
drivers. The auto-run USB driver installation supports Win ME, Win 98, Win 2000,
Win XP (32 bit) and Vista (32 bit). For those using Windows XP 64 bit, the driver
needs to be installed manually (please see section 2.3 below for details), and the
driver is also enclosed on the CD-ROM.
To connect the router to a PC using the USB interface, you need to use a standard
USB cable and install the USB interface software. Follow the steps below:
STEP 1: Insert the Installation disk and the following screen will be displayed. Click
the Next button to continue.
STEP 2: When the screen displays as below, wait until the drivers are fully installed.

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STEP 3: Click the Finish button, when the screen displays as below.
STEP 4: Installation is complete.

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2.3 USB Driver Manual Installation(64bit OS)
Before you connect your router’s USB cable to your PC, you must load the ADSL USB
drivers. This manual USB driver installation supports Windows XP 64 bit.
To connect the router to a PC using the USB interface, you need to use a standard
USB cable and install the USB interface software. Follow the steps below:
STEP 1: Connect the USB router to the PC by plugging the flat connector of a
standard USB cable into your PC, and plugging the square connector into the
router. The screen will display as below:
STEP 2: When the screen displays as below, select install from a list of specific
location (Advanced) and click the Next button.

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Note: This screen won’t be displayed if the USB Driver has been previously
un/installed.
STEP 3: If you are installing the software from a disk, insert the disk.

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STEP 4: Select the location of the file using the Browse button. Normally, the file is
on the CD-ROM shipped with the device.
STEP 5: Locate the Vista folder, and click the OK button.

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STEP 6: When the screen displays as below, click the NEXT button.

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STEP 7: Click the Finish button, when the screen displays as below.
STEP 8: Installation is complete.

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2.4 Un-installing the USB Driver
STEP 1: Click Start, Settings and then Control Panel as shown here.
STEP 2: When the following screen is displayed, click on the Add/Remove Hardware
Icon.
STEP 3: When the following screen is displayed, click Next.

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STEP 4: When the following screen is displayed, select Uninstall/Unplug a device
(as shown here). Then, click Next.
STEP 5: When the following screen is displayed, select Uninstall a device (as
shown here). Then, click Next.

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STEP 6: When the following screen is displayed, select the device that you want to
uninstall. Then, click Next.