Early media just means it can support a 180 Ringing or 183 Session Progress with SDP in order to establish a media connection prior to the call connect for things such as ringback and playing tones for FAC and such. What did you see in the CallManager traces for the call? Can you pull out all the SIP messaging for a test FAC call or just attach a packet capture from the phone?
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...