Default
180 s
Value Range
90–3600 s
Session Refresh (Session Timer)—Refresh Method
Specifies the type of request that the PBX sends to periodically refresh SIP sessions.
Default
re-INVITE
Value Range
UPDATE, re-INVITE
Proxy-Require Option
Specifies option tags in a Proxy-Require header field so that the SIP server is notified that the client is behind
a router with NAT enabled and firewall.
Default
Not stored.
Value Range
Max. 100 characters
3.1.6 Calling Party
Slot
Indicates the slot position (reference only).
Default
Current slot number
Value Range
Slot number
Port
Indicates the port number (reference only).
Default
Current port number
Value Range
Port number
Connection
Indicates the port status.
Document Version 2009-12
Programming Manual for Virtual SIP CO Line Card
3.1.6 Calling Party
27