1612-07: Shunt Pause Timer
Use this option to set the Shunt Pause Timer (Dial Pulse Mute Timer) for the COIU PCB. While dial
pulsing or doing a Flash, the COIU PCB switches a low resistance shunt across tip and ring to maintain the
correct impedance on the line. When dialing or flashing is complete, the COIU PCB waits this interval before
releasing the shunt.