Panasonic KXTA308 Installation Manual - Page 37

2.3.4 Extension Connection Telephone Wiring Note Connection Extension jacks 01 - 08 are for single line telephones and analog proprietary telephones. The maximum length of the extension line cord (twisted cable) which connects the system and the extension is as follows. Diameter of the line Max. length Single Line Telephone 22 AWG 1798 m {5900 feet} (Station Loop Limit: 24 AWG 1128 m {3700 feet} 600 Ω including set) 26 AWG 698 m {2290 feet} Proprietary Telephone 22 AWG 360 m {1180 feet} (Station Loop Limit: 24 AWG 229 m {750 feet} 40 Ω) 26 AWG 140 m {460 feet} 2 or 4-conductor wiring is required for each extension as listed below. There are four pins possible for connection: "T" (Tip), "R" (Ring), "L" (Low) and "H" (High). Telephone Single line telephone Wiring 1 pair wire (T, R) Proprietary telephone (e.g., KX-TA30830) 2 pair wire (L, H, T, R) • 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. Insert the modular plugs of the telephone line cords (2 or 4conductor wiring) into the modular jacks on the system. View of TEL Jack (Extension) H T H: High T: Tip R R: Ring L L: Low To extensions (JACK 01 - 08) Installation 2-13