Sharing The Phone Line - ACC RC-96 Owner's Manual

Chapter Eight: Interfacing to Other Equipment
Sharing the Phone
Line
+5/+12 Y
~
2.2K
PIN 4 COR ANGE)
) SERIAL
~
(2,6)
Ptl 7 (BLUE)
1/
BUSY (4)
I'
DIGITAL
AUDIO OUT
PIN 1 (BL ACK)
1/
VOICE
RC-96
(CH 1)
I'
RECORDER
REPEATER
~
P.... ! (RED)
,
AUDIO
f.I
(CH 1)
CONTROLLER
DYR CONNECTOR
Pff B (\\'HITE)
~
cos
(3)
,
Optiona12nd channel for phone
PIN 5 (YEU.OW')
,
"
AUDIO IN (CH 2)
PIN 6 (GREEN)
K
AUDIO OUT (CH 2)
Fig. 8-14. Digital Voice Recorder Interface
RIC connector, pins 4 and 6
Several controllers at a repeater site can share one phone line
with handshaking among controllers to indicate when the phone
line is in use. When the "Phone Line Shared" mode is selected
with a Programming command, User Function 3 becomes a low
true phone line busy output, which may be or-tied with other
controller's busy outputs. The signals are also connected to all
the 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-96 controller responds by saying, "Busy". If
the phone line is not in use, the patch proceeds, and the RC-96
controller pulls the busy output low to indicate to other control ­
lers that the phone line is now in use.
PHONE LINE
TIP
BUSY IN
RC- 96
"
/ '
RIc 3 OUT
CONTROLLER
RING
"'
"
PHONE LINE
BUSY IN
RC- 96
­
/ '
RIC 3 OUT
CONTROLLER
"'
PHONE LINE
.
"
t-­
BUSY IN
RC- 96
/ '
RIC
3 OUT
CONTROLLER
"'
A
PHONE LINE
+\1
"
BUSY IN
RC- 96
t-­
10K
"
RIc 3 OUT
CONTROLLER
t - - ­
"'
Fig. 8-15. Multiple Controllers Sharing a Phone Line
RC-96 REPEATER CONTROLLER OWNER'S MANUAL· 83