3Com 3C13636 Configuration Manual page 1414

3Com Router 3000 Ethernet Family
Configuration Guide
dialer circular group can be used to configure DCC. The user can select to configure
either PAP or CHAP authentication.
Use local-user in system view and password in local user view to configure the
username and password of a user that is allowed to dial in, and then perform other
configuration tasks in dial interface (physical or dialer interface) view.
Table 1-7 Configure a local interface to receive calls from multiple remote ends
Enable C-DCC
By default, C-DCC is enabled on ISDN BRI and PRI interfaces, but disabled on other
interfaces (serial, asynchronous, AUX, etc.) and the user should manually configure
the dialer enable-circular command. No authentication parameters or dial-in user
information are configured by default.
V. Configuring multiple interfaces to originate calls to multiple remote ends
Perform the following configuration steps after the basic DCC configuration is
implemented. As shown in the following figure, multiple local interfaces originate calls
to multiple remote ends (the picture components of inverse color represent the routers
irrelevant with the networking):
Local end
(Multiple interfaces)
Figure 1-7 Multiple interfaces placing calls to multiple remote ends
As shown in the above figure, the local interfaces interface0 (if0), if1, and if2 originate
DCC calls to the remote interfaces if1, if2 and if3. For allowing calls to multiple remote
ends, the user must use the dialer route command to configure the dialer strings and
destination addresses. For the calls to originate from multiple interfaces, the dialer
circular group must be used to configure DCC. The user can select to configure either
PAP or CHAP authentication.
Instead of using their own IP addresses, the physical interfaces in the dialer circular
group use the IP address of the dialer interface to make calls. The number argument in
the dialer circular-group number command configured in the view of a physical
interface must be the same as the one used in the interface dialer number command
corresponding to this physical interface. ISDN BRI or PRI interface is regarded as the
Operation
if0
if1
if2
Router
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1-13
Chapter 1 DCC Configuration
Command
dialer enable-circular
if1
Remote end A
Single/Multiple interface(s)
Router
if2
Remote end B
Single/Multiple interface(s)
Router
if3
Remote end C
Single/Multiple interface(s)
Router