Panasonic KX-TD1232E Installation Manual page 76

2.4.6 Installing Expansion Unit
If a KX-TD280 / KX-TD286 is to be installed:
KX-TD280
To Terminal Board or Modular
Jacks from the Central Office
Notes
2-40 Installation
6-1. Prepare the required plugs. Two 4-pin plugs are included in
KX-TD280, and six 4-pin plugs are included in KX-TD286 to
connect CO lines.
TB
To the unit ←
TA
RA
RB
6-2. Insert the plug into a jack on the unit.
Connect an earth wire to the earth terminal on the KX-TD280
or KX-TD286.
TB
TA
ISDN
Port No.3 or 5
RA
RB
ISDN
Port No.4 or 6
• All ports of the KX-TD280 and KX-TD286 can also be used for internal
ISDN lines. For the KX-TD816, jack numbers S05 and S06 of the KX-
TD286 are fixed as internal ISDN lines. To connect internal ISDN lines,
refer to Section 2.4.7 "Internal ISDN Line Connection."
RB
RA
← From Network
TA
TB
2
1
KX-TD286
To Terminal Board or Modular
Jacks from the Central Office
Jack
no.
TB
TA
S01
RA
RB
S02
S03
S04
S05
S06