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FUNCTIONS WHICH REQUIRE ADDITIONAL UNITS
(When the Exchanges are not connected by means of Tie-line.)
Those functions of the CPU-56 which require either the addition of specific units or processing in existing units are as
mentioned below. Before installation and adjustment of equipment, make sure to check your system.
(For Data Transmitting and Receiving units, refer to Part 2. "Function Selection for Data Transmitting and Receiving
units" Page 43.)
Function
Talk-Back from
paging speaker
Conference
External PA Paging
Station Paging
Additional Equipment
Required
Talk-Back Unit
Conference Unit
Paging Interface Unit
Paging Interface Unit
Unit Model
Nos.
TKU-11
CLU-52
PIU-52/52A
PIU-52/52A
Remarks
Optional amplifier (10W max.) may be re-
quired depending on application
External PA Equipment is required.
1. Wiring of "Station Paging Assignment
Plug" located at the back of the frame of
the Exchange.
2. Cutting of LMU jumper wire to split sta-
tion paging system. (Refer to Service
Manual for LMU-52/52A, PIU-52/52A).
Output Control Unit
Frame
Frame
OCU-52A
FR-510A/B
520A/B
FR-510B
520B
...
OCU-52 must be modified.
(Add M9, M17 and TTL IC 7475 2 pcs.)
2 PIU's can be mounted
with terminal for interface output
All call plus 15 in-
dividual paging
zones
Paging Interface Unit
PIU-52/52A
(2
pcs)
Data Transmitting
and Receiving Units.
DT-E11 and DR-B61
Position of PIU Units for All-Call Paging and 15 Individual Zone Paging
CPU - 55
OCU - 52A
HCU - 52
SGD-52A
CLU-52
DLU-52
LMU - 52A
PIU-52/52A No.1
(Zone 0-7 with All-Call Paging)
PIU-52/52A No.2
(Zone 8-15 without All-Call Paging)
AC POWER INDICATOR LAMP
BATTERY POWER INDICATOR LAMP
BUZZER STOP SWITCH
DS-510A
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