Telephone Auto Central Office Parts

(Page 9) End item NSN parts page 9 of 11
Part Number
NSN
NIIN
13-05108-00 Film Fixed Resistor
004317827
13031474-5 Electrical Wire
007522038
1310-1ST Plug-in Electronic Compon Socket
009311947
1310093G1 Electrical Power Cable Assembly
013319008
1310894G2 Electrical Surge Arrester
013221931
13207E1370 Surveying Tripod
002401881
13214E3789-11 Blind Rivet
008828385
13216E6177 Electrical Receptacle Connector
004822390
13227E0136 Woodla Aluminum Camouflage Stake
001081654
132544A091 Self-locking Stud
008830571
13272-13 Electrical Insulation Sleeving
009941157
1332469G1 Radio Frequency Cable Assembly
013229342
1332566G1 Electrical Filter Assembly
013217448
1332729G1 Cable Assembly
013333346
1332730G1 Cable Assembly
013333347
1339AS336-8 Blind Rivet
008828385
1352-8200 Composition Fixed Resistor
001168569
135283-003 Electrical Wire
007522038
136-0752-00 Plug-in Electronic Compon Socket
011103182
136403105 Instrument Shunt
001661013
Page: 9

Central Office, Telephone Auto

Picture of Telephone Auto Central Office

A business telephone system is a multiline telephone system typically used in business environments, encompassing systems ranging from small key telephone systems to large-scale private branch exchanges.

A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines used are directly controllable in key telephone systems from multiple telephone stations, and that such a system often provides additional features related to call handling. Business telephone systems are often broadly classified into key telephone systems, and private branch exchanges, but many hybrid systems exist.

A key telephone system was originally distinguished from a private branch exchange (PBX) in that it did not require an operator or attendant at the switchboard to establish connections between the central office trunks and stations, or between stations. Technologically, private branch exchanges share lineage with central office telephone systems, and in larger or more complex systems, may rival a central office system in capacity and features. With a key telephone system, a station user could control the connections directly using line buttons, which indicated the status of lines with built-in lamps.

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