Cisco SRP521W-K9-G1 Administration Guide - Page 161

Configuring Voice Configuring Voice Settings 6 SIP 100REL Enable EXT SIP Port Auth Resync-Reboot SIP Proxy-Require SIP Remote-Party-ID SIP GUID To enable the support of 100REL SIP extension for reliable transmission of provisional responses (18x) and use of PRACK requests, select yes. Otherwise, select no. The default is no. The external SIP port number. If this feature is enabled, the SRP authenticates the sender when it receives the NOTIFY resync reboot (RFC 2617) message. To use this feature, select yes. Otherwise, select no. The default is yes. The SIP proxy can support a specific extension or behavior when it sees this header from the user agent. If this field is configured and the proxy does not support it, it responds with the message, unsupported. Enter the appropriate header in the field provided. To use the Remote-Party-ID header instead of the From header, select yes. Otherwise, select no. The default is yes. The Global Unique ID is generated for each line for each device. When it is enabled, the SRP adds a GUID header in the SIP request. The GUID is generated the first time the unit boots up and stays with the unit through rebooting and even factory reset. This feature was requested by Bell Canada (Nortel) to limit the registration of SIP accounts. The default is no. Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models) 161