we have a GDS3710 door video unit that rings three GXV3240 phones direct via IP.
this works great EXCEPT when someone answers the call to open the door the other two phones keep ringing,
The phones themselves show no call in progress and if you pick the handset up the ringing stops till you put the handset back down then the ringing continues, The only way to stop the ringing is to reboot the phones.
We have to call direct via ip as these phones dont show the vid if they go through the asterisk system.
any ideas why this is happening