5. Functions of Units Mounted on Exchanges EX-610/EX-620/EX-630
5-1 CP (Central Processing Unit)
Function: Reads out the exchange procedures written into the
memory (ROM) and collates the data from stations for
traffic processing.
PROGRAM SWITCH for #200
Programming
Set this to "ON" position only
at time of initial programming
of the exchange and registration
of functions. In this case,
station No.200 is "programming
station" but becomes a normal
station when switch is placed in
"OFF" position.
5-2 OC (Output Control Unit)
Function: Stores temporarily the output data from the CP unit
and distributes them to each unit.
5-3 HC (Highway Control Unit HC-62
..... EX-610/620; HC-64..... EX-630)
Function: Turns on and off
the
time
sharing switches at the LM,
DLand SG units according to instructions received from
the CP unit. The link busy indicator lamps on the front
panel display the number of the links in use.
(Example for HC-62)
LINE ADDRESS
Off
Bright
PROGRAM
ON
OFF
CP unit
Calling Station
(T): No. 250
(200+32+16+2 = 250)
Called Station
( R ) : No. 205
(200+4+1 = 205)
SIGNAL CODE
TONE AND
SPEECH MODE
During Conversation
Press-to-talk (R -» T)
Press-to-talk (T-> R)
OFF duration on T & R
Calling
Privacy/Disconnected
Busy
Dialing
Zone paging
All call
Priority/Executive priority
Registration/Call holding/Mic-off
LINE ADDRESS Lamp
These lamps display the station
numbers (Binary number) using the
selected link (T: Calling station, R:
Called station)
SIGNAL CODE Lamp
These lamps display the code of
signal tone being used in the
selected link.
LINK SELECT Switch
The switch position is to be selected
in accordance with the number of
links in use. The line address and
the signal code of the link in use
are then displayed by the lamps.
Note:
Operate these switches using
the binary notation.
LINK BUSY Lamp
These lamps display the number of
the links in use.
CLOCK Lamp
This lamp, when on, indicates
that the control signal for the
time sharing switch is being
transmitted normally.
HC unit (HC-62)
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