User Manual - Configuration Guide (Volume 3)
Versatile Routing Platform Chapter 1
DDR Configuration
1-6
Dialer
Interface 1
Dialer
Interface 2
Router
Serial 1
Serial 2
Serial 4
Serial 3
Serial 5
Serial 6
Figure DC-1-2 Schematic diagram of Dialer Rotary Group
III. Configure an interface to receive calls
1) Receive calls from a single point
To configure an interface to receive calls from a single point, just enable DDR.
For configuration mode and command format, please refer to Step 1 of “Call to a single
point”.
As described above, for ISDN BRI/PRI interface, Legacy DDR has been enabl ed by
default, making execution of this command unnecessary.
2) Receive calls from multiple points
Usually, Dialer Rotary Group can be defined to receive calls from multiple points. Calls
can be received flexibly from Dialer Rotary Group.
Step 1: create a logic dial interface.
For configuration mode and command format, please refer to Step 2 of “Call from Dialer
Rotary Group”.
Step 2: enable DDR.
For configuration mode and command format, please refer to Step 2 of “Call from Dialer
Rotary Group”.
Step 3: select PPP encapsulation and select CHAP or PAP authentication.
Receiving calls from multiple points entails CHAP or PAP authentication, otherwise
various points cannot be distinguished from each other. CHAP authentication is
recommended because it has encrypted password before transferring it, while PAP
authentication transfers clear text.
Please use this command in the configuration mode of the logic dial int erface.