Cisco AS5800 Specifications Page 73

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Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide
DOC-7810814=
Chapter 2 Commissioning
Task 4. Configuring the Serial Interfaces
Task 4. Configuring the Serial Interfaces
Configure the serial D channels to route incoming voice calls from the PSTN to the integrated modems.
The behavior of the B channels is controlled by the D channels configuration instructions. The D channel
is the signaling channel.
Table 2-8 describes the relationship between T1 controllers and serial interfaces.
After timeslots are assigned by the pri-group command, D-channel serial interfaces are
automatically created in the configuration file (for example, S1/0/0:0:23, S1/0/0:1:23, and so on).
Individual B-channel serial interfaces are created as rotary members (dialers) of their signaling
D-channels (for example, S1/0/0:0:0 through S1/0/0:0:22). The D-channel interface functions like
a dialer for all the 23 B-channels using the controller.
An ISDN switch type defined on the global level is automatically propagated to the serial D-channel
interface level. However, a switch type defined on the serial-interface level overrides a switch type
defined on the global level.
Step 1 Apply the isdn incoming-voice modem command to each D-channel serial interface. In this example,
one interface is configured.
!
interface Serial1/0/0:4:23
isdn incoming-voice modem
!
Table 2-8 Controller-to-Channel Relationships
T1 Controllers D Channels B Channels
Controller T1 1/0/0:0 Interface serial 1/0/0:0:23 S1/0/0:0:0 through S1/0/0:0:22
Controller T1 1/0/0:1 Interface serial 1/0/0:1:23 S1/0/0:1:0 through S1/0/0:1:22
Controller T1 1/0/0:2 Interface serial 1/0/0:2:23 S1/0/0:2:0 through S1/0/0:2:22
Controller T1 1/0/0:3 Interface serial 1/0/0:3:23 S1/0/0:3:0 through S1/0/0:3:22
Controller T1 1/0/0:4 Interface serial 1/0/0:4:23 S1/0/0:4:0 through S1/0/0:4:22
... ... ...
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