Telephone Line In Use With Door When a Call Arrives
If there is a call in progress between the door speaker and a station user and a call (C.O.) comes in, the person inside the building (not the door speaker) will hear a call waiting tone. The station user can hook-flash the phone (or dial 9) and communicate with the incoming caller. When the call is complete, the station user hangs up the phone. To speak with the door phone again, the station user must either hook-flash the phone (within 4 seconds of picking up the receiver) if installed for Trunk Saver Mode or dial “1” if installed for Port Saver Mode.
Placing a Call Through the C.O. From Inside Building
To initiate a call through the C.O. in the Trunk Saver Mode, the person within the building simply takes the telephone off-hook, accesses the trunk connected to the AT&T Door Phone controller, and then dials the desired phone number. This is normal procedure for placing an outside call.
To initiate a call through the C.O. in the Port Saver Mode, the person within the building simply takes the telephone off-hook, then accesses the trunk connected to the AT&T Door Phone Controller. At this point the caller will hear a dial tone from the Door Phone Controller. Dialing a “9”, or waiting 4 seconds, will switch the caller to the C.O. and the regular phone number is dialed.
Installation - No Dedicated Trunk/Station Port 6-11