One of our remote sites is experiencing echo and delay when they are on the phone. This site is connecting via MPLS to host server in a different city. The phones are directly connected so there is no router in this site.
We also have other sites and they are seemed to be fine. I made some test calls between sites and use the Cisco phone call statistic. During my test calls I noticed that the Max Jitter is very high compare to other phones to the other sites.
During 4-digits (internal) call from host to this site the Max jitter is about 20-30. The LQK average is 4.5
If I call the host then it is transferred to this site the Max jitter is jumped to about 70-80. The LQK average is 4.5
If I call the this site directly as external call the Max jitter is jumped to about 50-60. The LQK average is 4.5
The Max jitter for the other site is about 5-10. The LQK average is 4.5
So it seems that we have jitter problem for this site. Is there any other testing that I can do from the Cisco CallManager/phones.
Any advice on how to do some deeper analyzing for this issue? So we can know exactly the issue.
We are using CUCM 6.11 and Cisco 7945 and 7965