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- Class-4_telephone_switch abstract "A class-4, or tandem, telephone switch is a U.S. telephone company central office telephone exchange used to interconnect local exchange carrier offices for long distance communications in the public switched telephone network. A class-4 switch doesn't connect directly to any telephones; instead, it connects to other class-4 switches and to class-5 telephone switches. The telephones of service subscribers are wired to class-5 switches. When a call is placed to a telephone that is not on the same class-5 switch as the subscriber, the call may be routed through one or more class-4 switches to reach its destination.".
- Class-4_telephone_switch wikiPageExternalLink 0,2542,t=tandem+switch&i=52544,00.asp.
- Class-4_telephone_switch wikiPageID "8289819".
- Class-4_telephone_switch wikiPageLength "7823".
- Class-4_telephone_switch wikiPageOutDegree "39".
- Class-4_telephone_switch wikiPageRevisionID "691728173".
- Class-4_telephone_switch wikiPageWikiLink 4ESS_switch.
- Class-4_telephone_switch wikiPageWikiLink 5ESS_switch.
- Class-4_telephone_switch wikiPageWikiLink Automatic_message_accounting.
- Class-4_telephone_switch wikiPageWikiLink Breakup_of_the_Bell_System.
- Class-4_telephone_switch wikiPageWikiLink Category:Telephone_exchange_equipment.
- Class-4_telephone_switch wikiPageWikiLink Chicago.
- Class-4_telephone_switch wikiPageWikiLink Circuit_switching.
- Class-4_telephone_switch wikiPageWikiLink Class-5_telephone_switch.
- Class-4_telephone_switch wikiPageWikiLink Crossbar_switch.
- Class-4_telephone_switch wikiPageWikiLink DMS-100.
- Class-4_telephone_switch wikiPageWikiLink Destination_routing.
- Class-4_telephone_switch wikiPageWikiLink Digital_Multiplex_System.
- Class-4_telephone_switch wikiPageWikiLink FCAPS.
- Class-4_telephone_switch wikiPageWikiLink Four-wire_circuit.
- Class-4_telephone_switch wikiPageWikiLink Interexchange_carrier.
- Class-4_telephone_switch wikiPageWikiLink Local_access_and_transport_area.
- Class-4_telephone_switch wikiPageWikiLink Local_exchange_carrier.
- Class-4_telephone_switch wikiPageWikiLink Long-distance_calling.
- Class-4_telephone_switch wikiPageWikiLink Number_One_Crossbar_Switching_System.
- Class-4_telephone_switch wikiPageWikiLink Optical_Carrier_transmission_rates.
- Class-4_telephone_switch wikiPageWikiLink Point_of_presence.
- Class-4_telephone_switch wikiPageWikiLink Public_switched_telephone_network.
- Class-4_telephone_switch wikiPageWikiLink SP-1_switch.
- Class-4_telephone_switch wikiPageWikiLink Subscription_business_model.
- Class-4_telephone_switch wikiPageWikiLink Switchboard_operator.
- Class-4_telephone_switch wikiPageWikiLink T-carrier.
- Class-4_telephone_switch wikiPageWikiLink Tandem.
- Class-4_telephone_switch wikiPageWikiLink Telephone_company.
- Class-4_telephone_switch wikiPageWikiLink Telephone_exchange.
- Class-4_telephone_switch wikiPageWikiLink Time-division_multiplexing.
- Class-4_telephone_switch wikiPageWikiLink Toll_switching_trunk.
- Class-4_telephone_switch wikiPageWikiLink Traffic_Service_Position_System.
- Class-4_telephone_switch wikiPageWikiLink Trunk_versus_toll_telephony.
- Class-4_telephone_switch wikiPageWikiLink Trunking.
- Class-4_telephone_switch wikiPageWikiLink Twisted_pair.
- Class-4_telephone_switch wikiPageWikiLink Western_Electric.
- Class-4_telephone_switch wikiPageWikiLinkText "Class-4 telephone switch".
- Class-4_telephone_switch wikiPageWikiLinkText "Class-4".
- Class-4_telephone_switch wikiPageWikiLinkText "No. 4 toll crossbar switching equipment".
- Class-4_telephone_switch wikiPageWikiLinkText "class-4 telephone switch".
- Class-4_telephone_switch wikiPageWikiLinkText "toll switching machines".
- Class-4_telephone_switch wikiPageUsesTemplate Template:Anchor.
- Class-4_telephone_switch wikiPageUsesTemplate Template:Cite_book.
- Class-4_telephone_switch wikiPageUsesTemplate Template:Refimprove.
- Class-4_telephone_switch wikiPageUsesTemplate Template:Reflist.
- Class-4_telephone_switch subject Category:Telephone_exchange_equipment.
- Class-4_telephone_switch hypernym Telephone.
- Class-4_telephone_switch type Company.
- Class-4_telephone_switch type Exchange.
- Class-4_telephone_switch comment "A class-4, or tandem, telephone switch is a U.S. telephone company central office telephone exchange used to interconnect local exchange carrier offices for long distance communications in the public switched telephone network. A class-4 switch doesn't connect directly to any telephones; instead, it connects to other class-4 switches and to class-5 telephone switches. The telephones of service subscribers are wired to class-5 switches.".
- Class-4_telephone_switch label "Class-4 telephone switch".
- Class-4_telephone_switch sameAs Q5127906.
- Class-4_telephone_switch sameAs m.026z5vw.
- Class-4_telephone_switch sameAs Q5127906.
- Class-4_telephone_switch wasDerivedFrom Class-4_telephone_switch?oldid=691728173.
- Class-4_telephone_switch isPrimaryTopicOf Class-4_telephone_switch.