I have the following scenario:
IP Phones (7821) - CME --- (SIP Trunk)---- PSTN.
The outgoing calls are well, no problems with that. But in the incoming calls in first case (With rel100 enabled) doesnt establish calls.
Ok, in SIP-UA I have disabled 180 (disable-early-media 180), then the calls stablish with 3 issues.
I don't see Cube sending 200 OK to PSTN.
One way audio (PSTN to Internal no audio).
The calls hangup in 16 seconds.
I Tried with Early Offer forced, Rel100 disabled, Xcoding. I can't see the reason that Cube not send the 200 Ok.
Please your help, Thank you!