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- Number_One_Crossbar_Switching_System abstract "The Number One Crossbar Switching System, or 1XB switch, was the primary urban local telephone exchange design used by the Bell System in the mid-20th century. Its switch fabric topology was based on the earlier urban panel switch system, which, in turn, was based on the turn of the century Divided Multiple Switchboard. Thus, it had separate incoming and outgoing sections. However, lines appeared only on the Line Link Frame (LLF), rather than requiring a multi-wire connection to two different sections as in a panel switch. The LLF uniting the telephone line circuit at its "column and switch" simplified administration. The first 1XB was the PR7 exchange at Troy Avenue in Brooklyn, New York in 1937.".
- Number_One_Crossbar_Switching_System wikiPageExternalLink 1498-telephone-communications-systems-v2-chap-2-no-1-and-crossbar-tandem.
- Number_One_Crossbar_Switching_System wikiPageID "8319248".
- Number_One_Crossbar_Switching_System wikiPageRevisionID "592541572".
- Number_One_Crossbar_Switching_System hasPhotoCollection Number_One_Crossbar_Switching_System.
- Number_One_Crossbar_Switching_System subject Category:History_of_the_telephone.
- Number_One_Crossbar_Switching_System subject Category:Telephone_exchange_equipment.
- Number_One_Crossbar_Switching_System type Central102994858.
- Number_One_Crossbar_Switching_System type GeographicPoint108578706.
- Number_One_Crossbar_Switching_System type Location100027167.
- Number_One_Crossbar_Switching_System type Object100002684.
- Number_One_Crossbar_Switching_System type PhysicalEntity100001930.
- Number_One_Crossbar_Switching_System type Point108620061.
- Number_One_Crossbar_Switching_System type TelephoneExchanges.
- Number_One_Crossbar_Switching_System type Workplace104602044.
- Number_One_Crossbar_Switching_System type YagoGeoEntity.
- Number_One_Crossbar_Switching_System type YagoLegalActorGeo.
- Number_One_Crossbar_Switching_System type YagoPermanentlyLocatedEntity.
- Number_One_Crossbar_Switching_System comment "The Number One Crossbar Switching System, or 1XB switch, was the primary urban local telephone exchange design used by the Bell System in the mid-20th century. Its switch fabric topology was based on the earlier urban panel switch system, which, in turn, was based on the turn of the century Divided Multiple Switchboard. Thus, it had separate incoming and outgoing sections.".
- Number_One_Crossbar_Switching_System label "Number One Crossbar Switching System".
- Number_One_Crossbar_Switching_System sameAs m.026_8s5.
- Number_One_Crossbar_Switching_System sameAs Q7069535.
- Number_One_Crossbar_Switching_System sameAs Q7069535.
- Number_One_Crossbar_Switching_System sameAs Number_One_Crossbar_Switching_System.
- Number_One_Crossbar_Switching_System wasDerivedFrom Number_One_Crossbar_Switching_System?oldid=592541572.
- Number_One_Crossbar_Switching_System isPrimaryTopicOf Number_One_Crossbar_Switching_System.