Cisco Systems DC-145 manual Automatically Configuring an External Modem, DC-146

Configuring and Managing External Modems

Automatically Configuring an External Modem

Figure 23 Cisco AS2511-RJ Access Server

Cisco AS2511-RJ

9	ASYNC	10	11	ASYNC	12	13	ASYNC	14	15	ASYNC
											16
1	ASYNC	2	3	ASYNC	4	5	ASYNC	6	7	ASYNC
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Modem

Modems are outside the chassis

Modem

14479

When you configure modems to function with your access server, you must provide initialization strings and other settings on the modem to tell it how to function with the access server.

This section assumes that you have already physically attached the modem to the access server. If not, refer to the user guide or installation and configuration guide for your access server for information about attaching modems.

Automatically Configuring an External Modem

The Cisco IOS software can issue initialization strings automatically, in a file called a modemcap, for most types of modems externally attached to the access server. A modemcap is a series of parameter settings that are sent to your modem to configure it to interact with the Cisco device in a specified way. The Cisco IOS software defines modemcaps that have been found to properly initialize most modems so that they function properly with Cisco routers and access servers. For Cisco IOS Release 12.2, these modemcaps have the following names:

•default—Generic Hayes interface external modem

•codex_3260—Motorola Codex 3260 external

•usr_courier—U.S. Robotics Courier external

•usr_sportster—U.S. Robotics Sportster external

•hayes_optima—Hayes Optima external1

•global_village—Global Village Teleport external

•viva—Viva (Rockwell ACF with MNP) external

•telebit_t3000—Telebit T3000 external

•nec_v34—NEC V.34 external

•nec_v110—NEC V.110 TA external

•nec_piafs—NEC PIAFS TA external

1The hayes_optima modemcap is not recommended for use; instead, use the default modemcap.

Cisco IOS Dial Technologies Configuration Guide

DC-146