Cisco CP-7911G-CH1 Administration Guide - Page 108
What to Do Next, Configuring Backup Registrar Service to SIP Phones
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How to Configure the SIP Registrar Setting Up Cisco Unified IP Phones using SIP Step 6 Command or Action Purpose registrar server [expires [max sec] [min sec]] Enables SIP registrar functionality. The keywords and arguments are defined as follows: Example: Router(conf-serv-sip)# registrar server expires max 600 min 60 • expires: (Optional) Sets the active time for an incoming registration. • max sec: (Optional) Maximum expiration time for a registration, in seconds. The range is from 600 to 86400. The default is 3600. Step 7 end Note Ensure that the registration expiration timeout is set to a value smaller than the TCP connection aging timeout to avoid disconnection from the TCP. • min sec: (Optional) Minimum expiration time for a registration, in seconds. The range is from 60 to 3600. The default is 60. Returns to privileged EXEC mode. Example: Router(conf-serv-sip)# end What to Do Next For incoming SIP Register messages to be successfully accepted, users must also set up a voice register pool. See the "Configuring Backup Registrar Service to SIP Phones" section on page 108. Configuring Backup Registrar Service to SIP Phones Backup registrar service to SIP IP phones can be provided by configuring a voice register pool on SIP gateways. The voice register pool configuration provides registration permission control and can also be used to configure some dial-peer attributes that are applied to the dynamically created VoIP dial peers when SIP phone registrations match the pool. The following call types are supported: • SIP IP phone to or from: - Local PSTN - Local analog FXS phones - Local SIP IP phone The commands in the configuration below provide registration permission control and set up a basic voice register pool. The pool gives users control over which registrations are accepted by a Cisco Unified SIP SRST device and which can be rejected. Registrations that match this pool create VoIP SIP dial peers with the dial-peer attributes set to these configurations. Although only the id command is mandatory, this configuration example shows basic functionality. For command-level information, see the appropriate command page in Cisco Unified SRST and Cisco Unified SIP SRST Command Reference (All Versions). 108 Cisco Unified SCCP and SIP SRST System Administrator Guide OL-13143-04