Panasonic KX-TD500 System Reference Manual page 356

18.00 Extra Device Port (XDP) Connection
Description
A digital proprietary telephone (KX-T7230, KX-T7235 or KX-T7250) and a single line telephone can be
connected to the same extension port of a DHLC card. They have different directory number, and they
work as independent extension.
There are two types installation of XDP.
Type 1
4-conductor wiring cord
Connect the pin number of "D1"
and "D2".
Digital Proprietary
Telephone (KX-T7230,
KX-T7235, KX-T7250)
Type 2
2-conductor wiring cord
Connect the pin number of
"T" and "R".
Single Line
Telephone
PO
WE
R
FU SE
ON
1
OF
F
DIG
ITAL
SUP ER
HYB RID
SYS
TEM RUN
PO OFF
WE LINE
R ALA
FU SE RM
ON
1
OF
F
(To DHLC card)
Digital Proprietary
Telephone (KX-T7230,
KX-T7235, KX-T7250)
3-F-96
DIG
ITAL
SUP ER
HYB RID
SYS
TEM RUN
OFF
LINE
ALA
RM
(To DHLC card)
2-conductor wiring cord
Connect the pin number of
"T" and "R".
Single Line Telephone
4-conductor wiring cord
Connect the pin number of
"T", "R", "D1" and "D2".
Rear of the telephone
To main unit
("TO EMSS"
is printed)
TO EMSS
To standard
telephone ("TO
TEL" is printed)
LCD ADJ
PUSH
TO TEL