Diversion Header (For Verizon); Failover Timer (Invite) - Panasonic KX-NCP500 Programming Manual

3.1.5 Option
Session Refresh (Session Timer)—Session Expire Timer
Specifies the length of time that the PBX waits before terminating SIP sessions when no reply to the repeated
requests is received.
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

Diversion header (for Verizon)

Specifies whether to use the Diversion header, which carries information about forwarded calls such as the
reason for forwarding and the forwarding extension number. This setting is for Verizon
Default
Disable
Value Range
Disable, Enable

Failover Timer (INVITE)

Specifies the amount of time to wait for a response for an INVITE request.
Default
0 s
Value Range
0–30 s
30 Programming Manual for Virtual SIP CO Line Card
use.
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Document Version 2011-10