[asterisk-users] First call - one way audio

[Ivan Demkovitch]

Hello folks,

I hope this is simple issue because it seems like something with registration expiration, etc.

We use Asterisk (plain setup) with Cisco SPA phones (also nothing changed on settings, just proxy/UN/Password
Everything on same LAN

So, what we observe is when call coming in - we can’t hear opponent but they can hear us. And this happens only when phone idle for some time.
Second call coming in - all works fine.

Any idea what might be causing this? Hopefully this is common issue.

Thank you,
Ivan