Refer to the exhibit. Which call status is this SIP message indicating?
A. Caller is in conference using MUTE
B. Caller is being call forwarded
C. Caller is on hold
D. Caller is transferred to voicemail
E. Caller is hearing ring back
Which call status is this SIP message indicating?
Presumably the a=sendonly is significant here to mean it’s one-way audio, so therefore either on hold or hearing ringback. Since ringback is indicated with 180 RINGING SIP message then by process of elimination it must be C – caller is on hold? Also significant is that it’s port 4000 for RTP indicating it’s the CUCM Annunciator in IP Voice Media Streaming Service?
Great catch on the RTP port being 4000