| Could be the flash timers in the circuit descriptor of the analog line.
When you press the flash button on the phone, it is actually disconnecting the circuit just briefly and then reconnects. This signals the PBX the phone wants to do something. If the actual flash timer in the phone is longer than the flash the PBX is expecting the call will disconnect.
Find the Circ Desctiptor of the phone and play with the timers a bit.
Dry Aquaman |