HP-UX C SIP Stack Programmer's Guide (Novembery 2007)

Configuration 405
Configuration Parameters
generalLingerTimer
After a server sends a final response, the server cannot be sure that the client has
received the response message. The server should be able to retransmit the
response upon receiving retransmissions of the request for generalLingerTimer
milliseconds.
Default Value: –1
Remarks: Group B parameter: generalLingerTimer = 64*retransmissionT1
inviteLingerTimer
After sending an ACK for an INVITE final response, a client cannot be sure that
the server has received the ACK message. The client should be able to
retransmit the ACK upon receiving retransmissions of the final response for
inviteLingerTimer milliseconds. This timer is also used when a 2xx response is
sent for an incoming Invite. In this case, the ACK is not part of the Invite
transaction.
Default Value: 32000
Remarks: Group A parameter
provisionalTimer
The provisionalTimer is set when receiving a provisional response on an Invite
transaction. The transaction will stop retransmissions of the Invite request and
will wait for a final response until the provisionalTimer expires. If you set the
provisionalTimer to zero, no timer is set. The Invite transaction will wait
indefinitely for the final response.
Default Value: 180,000
Remarks: Group A parameter
cancelGeneralNoResponseTimer
When sending a CANCEL request on a General transaction, the User Agent
waits cancelGeneralNoResponseTimer milliseconds before timeout termination
if there is no response for the cancelled transaction.
Default Value: –1
Remarks: Group B parameter: cancelGeneralNoResponseTimer =
64*retransmissionT1