Dialing/Communication Control; Circuit Connection And Procedure To Change Mode; Dial Call-Up Transmission To A Telephone Circuit - Toshiba GD-1220 Service Manual

3.

DIALING/COMMUNICATION CONTROL

3.1

Circuit Connection and Procedure to Change Mode

3.1.1

Dial call-up transmission to a telephone circuit

Detecting a calling signal?
Detecting an off-hook signal?
After detecting the dial tone,
or 3.3 seconds elapsed
Selection signal sent out
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START
NO
NO
DC circuit closed
END
3 - 1
YES
YES
Standby state
DIALING/COMMUNICATION CONTROL
3
GD-1220/1221