1-8. BLOCK DIAGRAM PRESENTATION. (CONT)
TIMER CIRCUIT (CONT)
The low voltage output from the release timer performs three functions:
Energizes the send amplifier for transmission of release tone.
Energizes the low group oscillator when in point-to-point mode.
Release Timer Discharge Circuit
This is the second subcircuit making up the timer circuit. It is designed not to function while the release acknowledge signal is being
received by the telephone set.
Acknowledge Delay Circuit
This is the third subcircuit making up the timer circuit. It is designed to stop the tone ringer circuit for a minimum of 450 milliseconds
after release sequence.