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TERMINALS 1 AND 2 ON 4-POSITION
TERMINAL BLOCK (LABELED TB1 - TB4 )
CONNECT THE TELCO-PROVIDED 60 MA DC
CONSTANT CURRENT SOURCE TO PROVIDE
POWER TO THE T1 SPAN.
TERMINAL NO.
FUNCTION
1
MA OUT
2
MA IN
3
FLF
4
FLF
FLF: FAULT LOCATION FILTER (FUTURE USE)
General DataComm
BUSINESS EQUIP 2
BUSINESS EQUIP 4
Serial No.
DISCONNECT
AC CORD
WARNING
BEFORE
SERVICING
GND
EQUIPMENT CONNECTOR (25-PIN FEMALE, LABELED
BUSINESS EQUIP 1 - BUSINESS EQUIP 4)
CONNECTS THE MULTIPLEXER TO THE CSU.
PIN NO.
FUNCTION
1
FRAME GROUND
2
SEND DATA (TIP)
3
RECEIVE DATA (TIP)
14
SEND DATA (RING)
16
RECEIVE DATA (RING)
WHEN INSTALLING A DataComm 551 IN SLOT FOUR,
PLACE JUMPER OVER COLUMN OF PINS LABELED T1.
FIGURE 2-7. DataComm FOURPAK ENCLOSURE INSTALLATION
Middlebury, Ct.
1
TB3
BUSINESS EQUIP 3
BUSINESS EQUIP 1
1
TB1
DIRECTION
N/A
TO CSU
FROM CSU
TO CSU
FROM CSU
NETWORK INTERFACE CONNECTOR (RJ48C, LABELED NET 1 - NET 4)
CONNECTS THE NETWORK TO THE CSU.
CABLE
CABLE
022H024-XXX
022H021-XXX
PIN NO.
WIRE COLOR
1
ORN/WHT
2
WHT/ORN
4
BLU/WHT
5
WHT/BLU
7
DRAIN
NOTE: THE REMAINING LEADS ARE NOT USED.
NET 1
NET
1
TB4
2
COMM
LINK
T1 SN PL
NET 3
1
TB2
NET 4
SUPERVISORY PORT CONNECTOR (25-PIN MALE,
LABELED AUXILIARY 1 - AUXILIARY 4) CONNECTS
THE SUPERVISORY TERMINAL TO THE CSU.
PIN NO.
FUNCTION
2
SEND DATA
3
RECEIVE DATA
4
REQUEST TO SEND
7
SIGNAL GROUND
8
CARRIER DETECT
THIS PORT IS ENABLED ONLY WHEN PMC-100 OPERATION
IS DISABLED.
INSTALLATION
FUNCTION
DIRECTION
RECEIVE DATA (RING)
TO CSU
RECEIVE DATA (TIP)
TO CSU
SEND DATA (RING)
FROM CSU
SEND DATA (TIP)
FROM CSU
SHIELD (FRAME GND.)
N/A
DataComm FourPak MODEL DFP-11
AUXILIARY 1
AUXILIARY 2
AUXILIARY 3
AUXILIARY 4
DIRECTION
TO CSU
FROM CSU
TO CSU
N/A
FROM CSU
2-17
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