Specifications

3-29
Cisco AS5x00 Case Study for Basic IP Modem Services
11/24/1999
Section 3 Commissioning the Cisco AS5800 Hardware
Enabling the T3/T1 Controllers
Task 3. Enabling the T3/T1 Controllers
Configure the settings for the T3/T1 controllers. They must match the telco’s settings on the telephone
switch. Mismatched settings cause problems; sometimes these problems are not detected for a long
time.
Figure 3-4 shows the logical controller components inside a Cisco AS5800. It shows that a T3 trunk
card requires T1 and T3 controller configuration settings. In the figure, only the fourth controller is
configured. There are a total of 28 T1 controllers to configure.
Figure 3-4 Logical T3/T1 Components
Step 1
Define the ISDN PRI switch type. In this case study, the T1 trunks are not using channel associated
signaling (CAS).
!
isdn switch-type primary-ni
!
There are two ways to define the switch type:

Under the individual serial-D channels. A different switch type can be defined for each PRI trunk.
See the next section “Task 4. Configuring the Serial Interfaces.”

Globally across all PRI trunks. All trunks use the same switch type (as in this case study).
30450
Cisco AS5800
T1
controller
28
controller t1 1/0/0:4
framing esf
pri-group timeslots 1-24
T3
controller
T3 trunk
controller T3 1/0/0
framing m23
t1 4 controller
PSTN