Chapter 43. Using the V.34 Network Interface

The V.34 interface allows routers to establish serial connections over switched telephone lines using externally attached modems that support the standard AT command set or integrated modem adapters. This chapter describes how to use a

V.34 interface. It includes the following sections:

vªBefore You Beginº

vªCon®guration Proceduresº

Note: You can assign a destination name to a connection list and assign a destination number to each line in the list. When that destination name is called, the numbers in the list are tried one by one until a connection is made or the list is exhausted.

Before You Begin

If you are using externally attached modems, make sure that you have asynchronous modems that support the Hayes AT command set. Also, you must know the maximum DTE speed of each modem.

Con®guration Procedures

This section describes how to con®gure your router for V.34. The tasks you need to perform are:

1.Adding V.34 addresses

2.Con®guring V.34 parameters

3.Adding dial circuits

4.Con®guring dial circuits

Note: You must restart the router for changes to the V.34 con®guration to take effect.

Adding V.34 Addresses

A default V.34 address is created when V.34 interfaces are initially con®gured (called ªdefault_addressº). Dial circuits con®gured on the V.34 interface default to the same address allowing some dial-in applications to work without modi®cation of the V.34 address.

You need to add a V.34 address (or modify the default_address) if you plan to use dial-out applications. The V.34 address includes:

vAddress Name. The address name is a description of the address. You can use any string of up to 23 printable ASCII characters.

vNetwork Dial Address. Telephone number of the local or destination port. You can enter up to 31 characters that are in the valid dial characters for the connected modem.

Note: The valid character set for telephone numbers as de®ned by the CCITT and supported by the IBM 2210 includes:

±The decimal digits 0 through 9

© Copyright IBM Corp. 1994, 1998

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IBM SC30-3681-08 manual Using the V.34 Network Interface, Adding V.34 Addresses, 595