I’m using HT503 to connect a little voip network to PSTN line.
In the case of incoming call, if the phone belonging to voip network hangs up the connection is still alive for about 60 seconds before ending.
I’ve updated firmware with latest version (18.104.22.168), but the behaviour doesn’t change.
I’m in Italy and I’ve set the PSTN Disconnect Tone equal to f1=425@-17,f2=425@-17,c=200/200-200/200.
How could I proceed to have immediate disconnection when ip phone hangs up?
Thank you very much.