Cisco Systems OL-7396-01 Configuring CES Circuits for SGCP

19-58
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter19 Configuring Circuit Emulation Services
Configuring SGCP
Configuring CES Circuits for SGCP
Any single time slot (64 Kbps) allocated to a circuit on a CES T1/E1 interface can be configured for
SGCP with these restrictions:
•CES is not the active source end of a softPVC.
•CES is not part of a hard PVC.
Note Configuration on the call-agent can restrict the range of circuits designated for signalling on a CES
circuit interface.
When you configure a CES circuit for SGCP, signalling should be given the proper time slot. For T1 CES
circuits, a time slot can be given a number from 1 to 24; for E1 CES, a number from 1 to 31.
Although no keyword identifies a CES circuit as allocatable by SGCP, there is normally a simple
configuration rule to ensure that signalling allocates the proper time slot:
circuit x is allocated time slot x, 1<=x<=24 (or 31 for E1).
Note The endpoint specifier used by SGCP refers to the CES circuit ID (not the time slot). If a time slot is not
allocated to a circuit, that time slot cannot be used by SGCP (or CES, either).
To configure SGCP operation on a CES circuit interface, follow these steps, beginning in globa l
configuration mode:
Example
The following example shows how to configure the CES port for structured CES with all time slots
available for SGCP. CES circuit16 is configured for common chann el signalling and specified as a soft
permanent virtual channel (softPVC) to a circuit on the CES port adapter connected to the call-agent.
Switch(config)# interface cbr 1/1/2
Switch(config-if)# ces aal1 service structured
Switch(config-if)# ces circuit 1 timeslot 1
Switch(config-if)# ces circuit 2 timeslot 2
Switch(config-if)# ces circuit 3 timeslot 3
Switch(config-if)# ces circuit 4 timeslot 4
Switch(config-if)# ces circuit 5 timeslot 5
Switch(config-if)# ces circuit 6 timeslot 6
Switch(config-if)# ces circuit 7 timeslot 7
Switch(config-if)# ces circuit 8 timeslot 8
Switch(config-if)# ces circuit 9 timeslot 9
Switch(config-if)# ces circuit 10 timeslot 10
Switch(config-if)# ces circuit 11 timeslot 11
Switch(config-if)# ces circuit 12 timeslot 12
Switch(config-if)# ces circuit 13 timeslot 13
Command Purpose
Step1 Switch(config)# interface cbr card/subcard/port
Switch(config-if)#
Selects the physical interface to be configured.
Step2 Switch(config-if)# ces aal1 service structured Configures the AAL1 service type.
Step3 Switch(config-if)# ces circuit circuit-id
timeslot number
Allocates a time slot number to the circuit
identifier.