Aria-130 Digital Key Telephone System
Issue: 1.2
Installation Manual
94
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 3.5.2 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 LGE on the order if necessary.
External Music Source wiring
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 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.
The above External Music sources including an Internal Music Source on MPB are selectable by
Admin Programming. See Programming Manual.
External Paging wiring
MISB supports up to 2 External Paging ports through 2 pairs of a RJ21 type connector, CHAMP1 on the
board.
EXP1: Pin No. 13 and Pin No. 38
EXP2: Pin No. 14 and Pin No. 39
The above External Music sources are selectable by Admin Programming.
External DC
Power Supply
External
Amplifier
Ext. paging
output
MD
F
MISB
RJ21 type connector, CHAMP1
1
26
13
38
Figure 3.5.3.a An example of External paging wiring
