Sharing The Phone Line - ACC RC-85 Owner's Manual

RC-85 Repeater Controller Owner's Manual
Additional operational instructions for use of the Digital Voice Recorder with the
RC-85 controller are supplied with the DVR.

Sharing the Phone Line

Several controllers at a common repeater site can share one phone line with
handshaking among controllers to indicate when the phone line is in use. Then
the "Phone Line Shared" mode is selected with a Configuration command, User
Function 3 becomes a low true phone line busy output, which may be or-tied
with other controllers' Phone Line Busy inputs. When a user attempts to bring
up the patch, and the phone line is in use by another controller, the RC-85
controller responds by saying "Busy". The the phone line is not in use, the patch
proceeds, and the RC-85 controller pulls the busy output low to indicate to other
controllers that the phone line is now in use.
(Interfacing to Other Equipment) 8 - 10 V3 4/87