Cisco Unified CME Commands: G

Table Of Contents

Cisco Unified CME Commands: G

gcid

Cisco Unified CME Commands: G

First Published: June 18, 2007

This chapter contains commands to configure and maintain Cisco Unified Communications Manager Express (formally known as Cisco Unified CallManager Express). The commands are presented in alphabetical order. Some commands required for configuring Cisco Unified Communications Manager Express (Cisco Unified CME) may be found in other Cisco IOS command references. Use the command reference master index or search online to find these commands.

gcid

To enable Global Call ID (Gcid) for every call on an outbound leg of a VoIP dial peer for a SIP endpoint, use the gcid command in voice-service configuration mode. To return to the default, use the no form of this command.

gcid
no gcid
Syntax Description

This command has no arguments or keywords.

Command Default

Gcid is disabled.

Command Modes

Voice-service configuration (config-voi-serve)

Command History

Cisco IOS Release

Modification

12.4(11)XW1

This command was introduced.

Usage Guidelines

Use this command in voice-service configuration mode to enable Global Call ID (Gcid) in the SIP header for every call on an outbound leg of a VoIP dial peer for a SIP endpoint.

When a call moves around and between the SIP endpoint and the target on a VoIP network because of redirect, transfer, and conference, the SIP Call-ID continues to change. For call control purposes, a unique Gcid is issued for every outbound call leg. A single Gcid remains the same for the same call in the system, and is valid for redirect, transfer, and conference events, including 3-party conferencing when a call center phone acts as a conference host. A SIP header, Cisco_GCID, is added into SIP Invite and REFER requests and to certain other responses to pass the Gcid to the target.

Examples

The following partial output shows the configuration for the gcid command:

router# show running-configuration
!
!
!
voice service voip
gcid
callmonitor
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
no supplementary-service sip moved-temporarily
sip
registrar server expires max 120 min 60