Hicom 120 MDF


Keystation and Single Line telephones are connected to blocks X10 - X20 (a,b,c,d)
Central ringer connected to block X20 (GND & ZTRW)
Trunks are connected to block X4 & X5 (AL1 & BL1 - AL8 & BL8)
External Paging is connected to block X6 (P1 & P2)
External Music on Hold is connected to block X20 (MOH1 & MOH2)
V24 socket is connected to block X6

S100 is the reset button - warm start

RS232 plug connections

The V24/printer port is located behind the lower chassis.  This D type, 25 way female, connector is wired as per the table below.  The wiring is normally labelled in pairs of white and brown wires.  The wires connect to the X6 terminal block on the MDF.

X6 Terminals

P1

GRD RXD CTS GRD

P2 TXD RTS DSR DTR

Pair number and colour

Note Used

1WH - 1BN

2WH - 2BN 3WH - 4WH 3BN - 4BN
D type connector pin   1  -  2 3  -  4 5  -  7 6  -  20

D Type Connector pin numbering (looking from the front)

13 - 12 - 11 - 10 - 9 - 8 - 7 - 6 - 5 - 4 - 3 - 2 - 1
25 - 24 - 23 - 22 - 21 - 20 - 19 - 18 - 17 - 16 - 15 - 14

 
 
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Last revised: December 19, 2010

FM