Registration period. The IP phone will re-register
automatically within registration period.
SIP Server 2 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 registration.
Note: Secondary SIP server is used for redundancy; it can be
left blank if there is not redundancy SIP server in user’s
environment.
Outbound Proxy Server To display and configure Outbound Proxy server settings.
An outbound proxy server is used to receive all initiating
request messages and route them to the designated SIP
server.
Note: If configured, all SIP request messages from the IP
phone will be sent to the outbound proxy server forcefully.
Transport Type To display and configure Transport type for SIP message
solution to solve NAT issues.
Note: By default, NAT is disabled.