I have an asterisk 16 based ip-pbx like this.
PSTN — GATEWAY — Asterisk 16 — Phone
inbound call & outbound call is no problem with phone 9001.
But, I set the phone to be transferred to my cell-phone.
so, inbound call --> Phone > transferred --> my cell-phone
but in this case, I can’t hear anything!
what did I check it?
Calls without audio are typically related to NAT firewalls that aren’t configured to handle the audio (RTP) packets correctly.
Thanks for your replay.
inbound + outbound call is no problem in my case.
but If i transfered call, this cause issue(no audio).
is this a NAT issue?
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