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3.2 ISDN Line Connection
130 ISDN Installation
3.2.3 Internal ISDN S0 Line Connection
The ISDN S0 Bus on the 2-ISDN S0 Line Unit (KX-TD280) and the 6-ISDN S0 Line Unit
(KX-TD286) can be used as internal S0 bus. Each port can be used as either external or internal
ISDN S0 Lines. Some System Programmes are required to use the S0 bus as internal ISDN S0
lines beforehand.
Connection
Use 4-pin plugs (included) to connect ISDN S0 lines. A single plug is able to connect one
ISDN S0 line. Mis-connection may cause the system to operate improperly.
1. Re-arrange telephone wires in reverse order of the plug.
2. Insert the plug into an ISDN S0 port on the unit.
3. Connect the lines between the ISDN board and the ISDN device.
4. Plug the AC power cord into the system and an AC outlet.
5. Programme [424] ISDN Port Type and other required programmes in System
Programming.
Wiring for external ISDN S0 line
Wiring for internal ISDN S0 line
From NetworkTo the unit
TB
TA
RA
RB
RB
RA
TA
TB
From Terminal
Equipment
To the unit
TB
TA
RA
RB
RB
RA
TA
TB
1
2
Panasonic
2CO w/PFT
2CO
ISDN
Port No.1
ISDN
Port No.2
TB
TA
RA
RB
To ISDN equipment To ISDN equipment
KX-TD286KX-TD280
Panasonic
Jack
no.
S01
S02
S03
S04
S05
S06
TB
TA
RA
RB