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Cisco ATA186 hangs calls in AS5350

Hi all,

I'm using SER as SIP Proxy, ATA186 and AS5350 as PSTN gateway.

I'm having an issue with ATA186. When I make a call, and I hang up before the other side picks up the call, the other side still ringing.  Then AS5350 don't release the channel used in AS5350, so at the end of the day there is no channels available.

The point is ATA186 sends Cancel with AS5350's ip addres into sip message to SIP Proxy when I hang up, so Sip Proxy discards the package since the ip address into the sip message is not its ip adress.

I'm using SIP image v3.2.1 (the last version a.f.a.i.k.).

Somebody with this problem too?

Best Regards