I have a customer that we have installed a freepbx system for. I am using Freepbx 12.0.76.1
The problem they are having is that during a call, they lose audio both directions for 5 to 10 seconds. This doesn't happen on every call, just sometimes. When it does happen, it occurs after they have been talking for a few minutes. After 5 to 10 seconds of silence, the audio comes back. There is no noticeable call quality issues before or after the silence.
I'm leaning towards it being a network issue, as this is the only system out of 12 that we have installed over the last year that is having this issue. All systems are running the same version of Freepbx and use the same phones (mix of grandstream 2130, 2160, and 1400). I have no way to prove this to the IT person on site.
Now I realize this is not enough information for someone to help me diagnose the problem, but what I am hoping for is that someone may be able to guide me in the process of getting more helpful information (or if I'm extremely lucky, someone else has had this issue and can give me some settings to check or things to look more closely at). What are some things I can test for or some logs I can retrieve that may help with this issue? Would running a wireshark capture during a trouble phone call be able to provide me with some helpful information? What other information can I provide that would assist anyone trying to help me on this?
Thank you to anyone who takes the time to read this and can help me troubleshoot this issue for my customer.
P.S. I will be onsite at this customers facility Monday the 21st, so I will be able to pull logs and run network tests if it would be helpful.
Mike