POWERTo extensions(JACK 01–08)TH R LH: HighT: TipR: RingL: LowView of TEL Jack (Extension)2.3.4 Extension Connection2-12 InstallationExtension jacks 01 – 08 are 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.Diameterof the line Max. lengthSingle 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 listedbelow. There are four pins possible for connection: “T” (Tip),“R” (Ring), “L” (Low) and “H” (High).Note • If a KX-TA62493 is installed;Note the jack numbers for the facsimile and single line telephone whichhave Caller ID service.• If a telephone or answering machine with an A-A1 relay is connected tothe system, set the A-A1 relay switch on the telephone or answeringmachine to the OFF position.Connection Insert the modular plugs of the telephone line cords (2 or 4-conductor wiring) into the modular jacks on the system.1 pair wire (T, R)2 pair wire (L, H, T, R)WiringTelephoneSingle line telephoneProprietary telephone(e.g., KX-T7030, KX-T7130)
