GDK-100
DIGITAL KEY TELEPHONE SYSTEM
116
3.5.6.5
DID Board wiring - Korea
DIDB is capable of connecting 4 DID lines through 2 connectors with screws on the board
The MDF that is in wide use in your country can also be locally used according to the requirements of local
regulation.
Note:
1. DIDB is polarity-sensitive, so it is important to check the polarity of wires when wiring. In idle
state, –48V is fed on Ring wire, and Reference is on Tip wire in GDK-100 DIDB.
But some network equipment may operate regardless of line polarity.
2. DIDB board is capable of connecting with up to 4 lines.
Figure 3.5.6.5
wiring DID line
M
D
F
DIDB
The connecting block
with screws on board
Network
T1
R1
T2
R2
R
T
CN3