
Station Connections 3-75
Single Line Interface Board (SLIB)
This board providesthe interface to twelve (12) 2500-type telephones.
The SLIB signals interface with mechanical 90V ringers and lights 90V
messagewaitinglampson2500setsasdesired.TheSLIBboardhasone
LED indica tor for status . A Norma l/Service sw itch located towa rd th e top
of the card allows the card to be inserted or removed from the system
while under power and also can be used to disable all station circuits on
the ca rd.
The station connections are via one (1) 50-pin female (amphenol type)
connector located on the front edge of the card.
The board can support a MSG12 board and a DTMF4-A board in a
daughter board type arrangement.
The MessageWait Lamp Relay Control (MSG12) provides Message Wait
Lamp Relay Control for message la mp s ingle line tele phones. The MSG12
board m ounts on the SLIB board as a daughter board type arrangement.
Installing the MSG12 Board
1. Unpack theMSG12 Module from its anti-static conductive bag in the
packing box.
2. Locate the CONN5 and CONN6 connectors on the MSG12 module.
3. Locate the CONN3, and CONN4 connectors on the SLIB (outlined).
4. Position theMSG12 module so that the CONN3 and CONN4
connectors match up with the CONN3 and CONN4 connectors on the
SLIB respectively.
5. PushtheMSG12moduleontotheseconnectorsmakingsureitis
seated properly.
Refer to Figure 3-27. This completes the installation procedure for the
MSG12 Module.
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