3com MSR 20-20 참조 매뉴얼

Use the dialer user command to add a remote username for authenticating 
incoming calls.

Use the undo dialer user command to remove the remote username.

By default, no remote username is set.

This command is only valid on dialer interfaces in RS-DCC.

On a dialer interface encapsulated with PPP, DCC identifies which dialer interface 
is to be used for receiving calls based on the remote username obtained through 
PPP authentication.

You may configure multiple dialer users (up to 255) on a dialer interface. This 
allows DCC to provide accesses to multiple dial interfaces by using one dialer 
interface.

Use this command on a C-DCC enabled dialer interface with caution. It enables 
RS-DCC and can remove the C-DCC configurations on the interface.

Performing the undo dialer user command on a dialer interface can clear all 
configurations on it.

ppp pap local-user on page 522 and ppp chap user on page 511.

# Add a remote username routerb.

<Sysname> system-view

[Sysname] interface dialer 1

[Sysname-Dialer1] dialer user routerb 

dialer-group group-number

Dial interface (physical or dialer) view

group-number: Number of a dialer access group, in the range 1 to 255. You may 
define it with the dialer-rule command.

Use the dialer-group command to assign the interface to a dialer access group.

Use the undo dialer-group command to remove the interface from the dialer 
access group.

A DCC dial interface can belong to only one dialer access group. Configuring this 
command can overwrite the previous dialer access group setting for the interface, 
if any.