Hi all, I have a user who is reporting one-way audio, but only when a call is made to or from particular PSTN (cell) numbers.
Their phones are behind a NAT router and my server is on the open Internet. Calls within their office sound fine. Calls to/from most numbers sound fine. When they took their phones home, those same phone numbers still had problems. So, I don't think it's their network. I've taken pcaps of both legs of example calls. On the provider-side, I see 2-way audio. On the client-side, I only hear one side. Most of the time, though, their phones work correctly. Any ideas where to look to fix this? Thanks in advance. -- Mike Diehl
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