Cisco Systems OL-7396-01 Configuring SGCP

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ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter19 Configuring Circuit Emulation Services
Configuring SGCP
CESwitch(config-if)# no ces circuit 0
Verifying Deletion of a Previously Established Circuit
To verify the deletion of a previously configured circuit, use the following privileged EXEC commands:
Examples
The following example displays the configuration of any CES circuits:
CESwitch# show ces circuit
The absence of output verifies that all CES circuits are deleted.
The following example displays the configuration of any CES addresses:
CESwitch# show ces address
CES-IWF ATM Address(es):
The absence of output verifies that all CES circuits are deleted.
Configuring SGCP
The Simple Gateway Control Protocol (SGCP) controls voice-over-IP gateways by an external call
control element (called a call-agent). This has been adapted to allow SGCP to control ATM switch router
circuit emulation services (CES) circuits (called endpoints in SGCP). The resulting system (call-agents
and gateways) allows for the call-agent to engage in common channel signalling (CCS) over a 64-Kb ps
CES circuit, governing the interconnection of bearer channels on the CES interface. Inthis system the
ATM switch router acts as a voice-over-ATM gateway.
For overview information about configuring the SCGP feature, refer to the Guide to ATM Technology.
Operation
The network operator can globally enable or disable SGCP operation for the switch. By default, SGCP
is disabled. When SGCP is enabled, the ATM switch router begins listening on the well-known User
Datagram Protocol (UDP) port for SGCP packets. The endpoint ID in an SGCP packet identifies the CES
circuit. The CES circuit endpoint can be used by SGCP if the f ollowing conditions exist:
•The parent CES interface is enabled, and the LineSta te field indicates NoAlarm (determined via the
show ces interface command).
•The CES circuit is allocated a single time slot.
•The CES circuit is enabled (not shut).
•The CES circuit is not configured as an active softPVC.
Command Purpose
show ces circuit Shows the configuration information for the circuit.
show ces address Shows the configuration information for any CES
addresses.