rarely (about once a week), I notice this error on my customer’s UCM 6202:
“send SIP BYE)! Hungup causes: Normal, unspecified”
This error can be seen in screen 1 taken from “System Events” and on screen 2 there is the same phone call taken from the CDR.
In essence once in a while it happens that the conversation just falls without apparent reason.
There are also calls of 20-30 minutes, so it is not a problem of NAT or timer.
I noticed that it happened even during a simple local conversation between extension and extension, so I exclude a problem of Trunk or connectivity.
UCM 6202 fw 220.127.116.11
error -> SIP internal call failure! From user: 3345319383, To user: 201UCM hung up the call (send SIP BYE)! Hungup cause: Normal, unspecified
Did any of you have a problem? Do you know of a solution?
p.s.: it is impossible for me to post a pcap because it is a rare problem (about once a week) and it is difficult to simulate and identify.