Aria-130 Digital Key Telephone System
Issue: 1.2
Installation Manual
99
Figure 3.5.4.c Connection method when the 4-wire line cord, or special
connection method with contact number 2 and 5.
Note
:
1. Each area means the followings,
A
: LDK system,
B
: between the LDK system and MDF,
C
: cable in building,
D
: between Terminal connection point, e.g. terminating adapter and Terminal,
E
: digital terminals
2.
Only two wires should be connected to digital terminals and Interface Board, so the rest
should be removed at MDF or Terminal Connection Point, as X points shown in above
Figure.
Pin Assignments of RJ21 type jack on DTIB12/DTIB24/DSIB
See the clause 3.5.4.5 contact assignments of RJ21 type connector on extension board.
Area
A
Area
B
Area
C
Area
D
Area
E
MD
F
1
2
3
4
5
6
ARI
A
-13
0 D
T
IB
1
2/
D
T
IB
24/
D
S
IB
RJ21 type
connector
on the board
1
26
2
27
3
28
4
29
DT1
DR1
DT2
DR2
DT3
DR3
1
2
3
4
5
6
