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GDK-100
DIGITAL KEY TELEPHONE SYSTEM
3.5.3 MISB wiring
MISB provides connections for 2 music sources, 2 external page ports, 4 relay contact controls, and an
alarm/door-bell input monitor through RJ21 type female connector. Table 3.5.3 shows the contact
assignments of RJ21 type connector on MISB.
The cable with RJ21 type male connector is required to connect with terminal or external devices. It is
possible to get the cable locally, or use GDK-162 5MC2 supplied by LGIC on the order if necessary.
External Music Source wiring
GDK-100 MISB is capable of accommodating up to 2 ports of External Music Sources through 2 pairs of a
RJ21 type connector, CHAMP1 on the board.
MOH1: Pin No. 11 and Pin No. 36
MOH2: Pin No. 12 and Pin No. 37
The level can be adjusted by the administration programming (Program 66) in 0.5 dB steps to ±20 dB of the
input. Note, if the output of the source is too high or low, it will be necessary to lower or raise the output level
control at the source.
Above External Music sources including an Internal Music Source on MPB are selectable by Admin
Programming. See Programming Manual.
External Paging wiring
GDK-100 MISB supports up to 2 External Paging ports through 2 pairs of a RJ21 type connector, CHAMP1
on the board.
MOH1: Pin No. 13 and Pin No. 38
MOH1: Pin No. 14 and Pin No. 39
Above External Music sources are selectable by Admin Programming.
GDK-100 MISB
RJ21 type connector, CHAMP1
26
13
Ext. paging
output
38
Figure 3.5.3.a
1
An example of External paging wiring
95
External DC
Power Supply
External
Amplifier
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