Registration Period: Registration Period: The registration will
expire after Registration period, the IP phone will re-register
automatically within registration period.
Server IP: To display and configure Secondary SIP server
settings. This is for redundancy, if registering to Primary SIP
server fails, the IP phone will go to Secondary SIP server for
registering.
3.4.4.Outbound Proxy Server
An outbound proxy server is used to receive all initiating
request messages and route them to the designated SIP
server.
To display and configure Transport type for SIP message