Article ID: 1652 | |
Q&A |
Configuring an ISU for use with a Cisco Router
Q:
A:
This document outlines how to configure ADTRAN ISU™ terminal adapters (TAs) to work with Cisco routers. The configuration of both the router and the ISU depends on the application. The applications discussed here are
This configuration is used when the ISU connects to another ISU or other device that supports BONDING Mode 1. It is assumed that V.25 dialing is used (i.e., there is a Dialer Inbandstatement in the Cisco configuration). If your application uses DTR dialing, refer to Dial Backup Connection later in this Technical Support Note. Only the relevant options are addressed here.
For a one B channel connection, change the Bit Rate accordingly and change Protocol to Clear Channel.
This configuration is for dialing into a router (or Internet service) that supports Multilink PPP. Again, it is assumed that V.25 dialing is used. If your application uses DTR dialing, refer to Dial Backup Connection later in this Technical Support Note.
If there is a second number to dial, store it in Stored Number 1. This option is found in the Dial menu, under the Store/Review # option.
When configuring the Cisco Router:
In the relevant serial interface, there must be a Dialer Inband statement containing the number to be dialed. There should also be a Dialer Map statement mapping the appropriate network address to the serial port.
This configuration is generally used for a dial backup connection to T1 or Frame Relay. It is assumed that the Cisco device initiating the dial backup connection is using a Dialer DTRcommand to initiate the call. The configurations will differ slightly depending on whether the desired connection is to be 56/64k or 112/128k, as well as whether the unit initiates or answers the call.
On the dialing unit, store the dialing number in Stored Number 0. This option is found in the Dial menu, under the Store/Review # option. If you are using Multilink PPP, store the second phone number to dial in Stored Number 1. If no number is stored in Stored Number 1, the same phone number is dialed to establish the second link.
If you experience any problems using your ADTRAN product, please contact ADTRAN Technical Support.