04-06-2017, 02:10 AM
The handsets are displaying a Missed Call even though a CANCEL packet "answered elsewhere" was sent to the phones.
This only occurs on PJSIP, not old SIP, because of the Reason Code header containing Q.850 (instead of just cause=200, it contains both)
According to RFC 6432 (https://tools.ietf.org/html/rfc6432 ) the presence of this header should not affect normal operation.
I have attached a screenshot of a PCAP of the q.850 header.
The desired outcome would be to NOT mark a Missed Call, in accordance with RFC 6432
This only occurs on PJSIP, not old SIP, because of the Reason Code header containing Q.850 (instead of just cause=200, it contains both)
According to RFC 6432 (https://tools.ietf.org/html/rfc6432 ) the presence of this header should not affect normal operation.
I have attached a screenshot of a PCAP of the q.850 header.
The desired outcome would be to NOT mark a Missed Call, in accordance with RFC 6432