Error Response: Enable this option to send error messages in response to bad requests.
Default Transport: Enable this option to insert “transport=tcp” in the URI of contact and record route header.
Connection Alive Timeout: Specify the maximum time (in seconds) a SIP link can be inactive before the connection is closed. The default value is 120 seconds.
Maximum Queue Length: Specify the maximum number of simultaneous write requests or connect requests, or both, that can be waiting to write on a link. The default value is 50 requests.
Write Timeout: Specify the maximum time, between 1 and 50 seconds. for a single write operation of a SIP link. The default value is 10 milliseconds.
Write Timeout Retries: Specify the maximum number of retries, between 1 and 25, that are allowed to perform a single write operation of a SIP link. The default value is 25.
Timer T1: Set the time taken for a round trip time between the client and server transactions. The default value is 500 milliseconds.
Timer T2: Set the maximum retransmit interval for non-INVITE requests and INVITE responses. The default value is 4000 milliseconds.
Timer T4: Specify the maximum duration a message will remain in the network. The default value is 5000 milliseconds.