Incoming call "Disconnected" before being answered

[MikeyG.IT]

In this deployment, I have a patton sn4114 and three analog lines plugged into it. On ONE particular line, when a call rings in, it only rings for a few seconds and then the extension says disconnected and the caller just hears continuous ringing. What is strange is that I can plug the line in question to a butt set and it works as it should (continues to ring until it is actually picked up)
In the server activity log i get the message "Leg L:323.1[Line:90008<<xxxxxxxxxx] is terminated: Cause: CANCEL from 192.168.0.59:5063

IP address 192.168.0.59 being my patton device.

It only does this on the one analog line.
Please advise

 

[eddv123]

Sounds to me like that line is running something like a feature we have here in the UK called BT featureline - this involves PBX-like settings on the line in question coming in from the exchange.

My second guess could might involve early media.

Early media is not required on standard PSTN calls as when a number is dialed a media channel is established so that the caller can hear the ringing tone of the remote device. This would be a requirement when using a PSTN gateway and thus converting from SIP to the PSTN signalling of choice.

The 'early-disconnect' option on the two SIP interfaces in the Patton config. Just un-tick the box, apply & test. You can also check the Patton template generated from 3CX for this setting also.

Also ensure you are running the latest 6.11 firmware for the smartnodes:
https://www.patton.com/support/upgrades/