There is a scenario in our network wherein phones connected to Vegastream gateway and registered as Third party SIP phones in the unified call manager are experiencing huge noise while communicating with cisco 7985 video phones while on other cisco phone models both ways speech is fine.What could be teh possible reason behind and how to troubleshoot it?
With the information available, it is difficult to say what is causing this issue. The place to start would be to see what is the codec being used for both the calls. You might want to check if the codecs being used are the same.
There will always be a quality difference when using g729 compared to g711. g711 uses more bandwidth compared to g729, therefore if you had a network issue, you would have seen it first on g711 calls. By doing less compression the quality of the call is always better. Is there a way for you to span the port to which the phone is connected and do a network capture ? Once that is done, wireshark gives you an option to extract audio from it. If you could capture the same and share it, it could help understand if there is a noise being introduced or not.
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...