Extension Connection - Panasonic KX-TD612E Installation Manual

2.4.3 Extension Connection

Wire Specifications
The required wire specifications are as follows:
Wire
Diameter of conductor
2 or 4-conductor wiring is required for each extension as listed below. There are 4 connection
pins: "A" (A-wire), "B" (B-wire), "L" (Low) and "H" (High).
Single line telephones
Digital proprietary telephones 2 pair wire (L, H, A, B)
If a telephone or answering machine with an A-A1 relay is connected to the system, set the
A-A1 relay switch of the telephone or answering machine to the OFF position.
Maximum length of cable
The maximum length of the extension line cord (twisted cable) that connects the system and
the extension is as follows:
SLT
DPT
The maximum length of the cables with the same diameters may vary depending on the types
of the cables.
Installation Manual
Telephone
Diameter
ø 0.5 mm
ø 0.5 mm
Solid wire
ø 0.4 mm — ø 0.6 mm
Wiring
1 pair wire (A, B)
Maximum length
620 m
240 m
Installation
41