Avaya a500 사용자 가이드

Cajun A500 ATM Switch Overview

1-16

Cajun A500 ATM Switch User Guide

Note: When PPP configuration changes are made, you must reboot the Cajun A500

for the changes to take effect. It does not need to be restarted when editing

PAP or Challenge-Handshake Authentication Protocol ( CHAP) tables.

You cannot directly disable the dialin channel like you can the dialout channel. If you

must disable the dialin channel, you can:

U Set PAP or CHAP as required.

U Clear all entries in the PAP/CHAP table.

U Another method to disable the dialin channel would be to add

ATS0=0

to the dialin

dialstring (then the modem would never answer a call coming in).

Both channels always use active mode, which means that they try to initiate the

negotiations as soon as the physical modem link is up.

About IP addresses

When using Windows

95, the mask is not particularly important if you are setting up a

point-to-point network).

Note: Performance markedly improves if the peers are in the same subnet.

If the addresses are not on the same subnet then the PC must be setup to use the default

gateway in order for applications to run. It is recommended that you configure both local

and peer address on the same subnet at the A500. Set the dialout name and password

required by the PC for autentication.

Modem Connections

If the modem connection is removed and then plugged back in to the A500, it is not

always detected (this appears to be modem dependent). Recycling the power on the

modem works most of the time. You can tell if it works if the AA (Auto Answer) light

comes on if successful. Another method is to reboot the A500.

The default modem setup and dialstrings are simple so that they work as broadly as

possible. But, if you really need to change modem setup, dial or hangup strings,

Table 1-1. lists chat special character codes you may need in addition to the AT command

set for your modem.