Extension Connection - Panasonic KX-TA308 Installation Manual

2.8

Extension Connection

Extension jacks 01 through 08 can be used for all kinds of telephones.
Telephone Wiring
The maximum length of the extension line cord (twisted cable) which connects the system and
the extension is as follows.
Single Line Telephone
(Station Loop Limit:
600 ohms including set)
Proprietary Telephone
(Station Loop Limit:
40 ohms)
2 or 4-conductor wiring is required for each extension as listed below. There are 4 pins
possible for connection: "T" (Tip), "R" (Ring), "L" (Low) and "H" (High).
Single line telephones
Proprietary telephone
(e.g., KX-T7330)
• If a telephone or answering machine with an A-A1 relay is connected to the system, set the
!
!
A-A1 relay switch on the telephone or answering machine to the OFF position.
Connection
Insert the modular plugs of the telephone line cords (2 or 4-conductor wiring) into the modular
jacks (JACK 01 through 08) on the system.
!
!
• System extensions must be located within the same building as the KX-TA308AL.
Diameter of the line
22AWG
24AWG
26AWG
22AWG
24AWG
26AWG
Telephone
View of TEL Jack (Extension)
H: High
T: Tip
R: Ring
L: Low
H R L T
Wiring
1 pair wire (T, R)
2 pair wire (L, H, T, R)
Max. length
1798m (5900 feet)
1128m (3700 feet)
698m (2290 feet)
360m (1180 feet)
229m (750 feet)
140m (460 feet)
To extensions
Installation
2-9