You are correct Chris. in the SETUP message that the source will send towards the destination, it will specify DTMF relay as one of the options supported, just like the g711 codec. Typically, in the PROCEEDING/ALLERTING message that will come back from the destination, it will also list the options it supports, after matching to the best of its ability. And if the destination doesn't support DTMF relay, the inband dialtones won't pass thru, or better yet, the end that doesn't support it will not be able to play them as tones to the end user.
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...