I upgraded my GDS 3710 from 126.96.36.199 to 188.8.131.52 and the door station behaves totally different.
with 184.108.40.206 when you press the bell button the bell rings and after a while the bell rings again. I configured a “Ringing Timeout(s)” of 15 seconds in the Phone settings/Phone Settings and after 15 seconds the GDS hangs up - this is exactly the behaviour i want.
with 220.127.116.11 (and also 18.104.22.168 so the change must have been in 22.214.171.124) when i press the bell button the bell rings once, then a “ringing” tone is played. This ringing tone is played for 2 full Minuten, then 3 beeps occur and the call is disconnected. (probably my fritz!box ending the call?) - the “Ringing Timeout(s)” is still configured for 15 seconds but does not seem to work at all.
i even did a factory reset, no change.
i downgraded to 126.96.36.199 and the GDS3710 works as intended.