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SIP line registrar options

The following table describes the options that you can use to configure registrar options for a SIP line. For information on how to access these options, see Configure a SIP line.

Changes to all of the options on this dialog box take effect immediately.

Option

Description

Default

External List of Telephone Numbers

This is a list of External Phone Numbers that are not configured in CIC but that need to be directed to the CIC server when they are encountered. Therefore, CIC (via TS) must register these external phone numbers with the registrar. Typically, these are numbers that are provisioned on the PSTN interface but that are not provisioned in the CIC system, such as a 1-800 number.

Not specified

Prioritized List of Registrar addresses

This is a list of registrars in order of priority that are available for contact registration by CIC. If a registrar is configured, then all CIC contacts are sent to it in a SIP REGISTER message by TS. The SIP engine attempts to register the given telephone numbers to every host in the registrar list.

Each entry in the list must be either an IP address in the IPv4 dotted-notation or a fully qualified domain name.

For each IP address there should be a port. The port number identifies the port at which the registrar will be servicing requests.

Valid port values are from 1024 to 65535.

For each IP address, you must also specify the registration time in seconds. The value for the registration time must be an integer between 0 and 360000 (100 hours) inclusive.

The default for a line that uses TLS is 5061.

The default for all other protocols (TCP and UDP) is 5060.