3Com 10014299 Power-on Initialization Through Initialization Script, Directly, Authentication for

756CHAPTER 52: CONFIGURING MODEM

Power-on Initialization

through the

Initialization Script

Enable the router to initialize the modem to which the asynchronous interface is connected when powering on the router or rebooting it.

[Router] script-string init "" AT OK AT&B1&C1&D2&S0=1 OK AT&W OK

[Router] interface async 0

[Router-Async0] modem

[Router-Async0] start-chat init

Use the Script to Dial	Configure a modem script and direct dial.
Directly	[Router] script-string dial "" AT OK ATDT8810058 CONNECT
	[Router] interface async 0
	[Router-Async0] modem
	[Router-Async0] start-chat dial
Authentication for	Before logging in network through dialing, multiple users who connect with
Modem Dial-in User	modem are authenticated on 3Com router based on username and password.
	Only the authenticated users can logging in network, and those who have failed
	the authentication are not allowed to log in.
	Figure 242 Network of authentication for modem dial-in user

PSTN

Mod em

PCRouter

1Configure a modem script.

[Router] script-string welcome "" "Welcome use 3Com router!"

2Configure a modem user, and enable AAA authentication.

[Router] local-user testuser password simple testuser service

exec-operator

[Router] aaa-enable

[Router] aaa authentication-scheme login default local

[Router] aaa accounting-scheme optional

3Execute specified script in serial0 interface view.

[Router] interface serial 0 [Router-Serial0] modem-login

[Router-Serial0]script trigger connect welcome

[Router-Serial0]undo modem auto-answer

Troubleshooting	The modem is in abnormal status (such as the dial tone or busy tone
	remains for a long time).
	Do the following:
	■ Execute the commands shutdown and undo shutdown on the router physical
	interface connected to the modem to check whether the modem has been
	restored to normal status.