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- Community_dial_office abstract "A "Community Dial Office" (CDO) was a small Class 5 telephone exchange in a rural area.These most often provided capacity for 1000 or fewer customers and were designed for unattended operation. CDOs could be step by step, all relay or crossbar. Many offices provided four-digit local dialling to small rural communities where a call outside the local exchange was long distance. Initial deployments were based on step-by-step equipment such as the Western Electric 350A (first deployed on May 27th, 1928 in Arcadia, California) and its successor models 360A, 355A and 356A. These switches had some design similarities to No. 1 step-by-step systems already in use in large offices (10000 subscribers or more) but were of a simpler design (line finders would only need to scan hundreds of lines instead of the thousands in use in the cities) and not designed for expandability.Any operator assistance or toll call billing for these unattended stations was handled remotely at a larger exchange in the city.In the 1960s, Northern Electric developed the SA-1 community dial office as a small Class 5 crossbar switch for local use in rural areas.In the late 1970s, Western Electric's number 3 Electronic Switching System (ESS) was installed in small communities with up to 4500 telephone lines; it also served as workhorse in some large private branch exchange installations.Late in the 20th century the smallest offices were replaced by remote concentrators connected to a host office in an adjacent exchange area, which may be several miles away. Others were replaced with distributed switching hardware (a remote switching centre controlled by a digital switch in the city) or with small digital switches such as Nortel's DMS-10 (a self-contained exchange for up to 8000 subscribers).".
- Community_dial_office wikiPageID "11488852".
- Community_dial_office wikiPageLength "2864".
- Community_dial_office wikiPageOutDegree "14".
- Community_dial_office wikiPageRevisionID "661245951".
- Community_dial_office wikiPageWikiLink Business_telephone_system.
- Community_dial_office wikiPageWikiLink Category:Telephone_exchange_equipment.
- Community_dial_office wikiPageWikiLink Class-5_telephone_switch.
- Community_dial_office wikiPageWikiLink Class_5_telephone_switches.
- Community_dial_office wikiPageWikiLink Crossbar_switch.
- Community_dial_office wikiPageWikiLink DMS-100.
- Community_dial_office wikiPageWikiLink Digital_Multiplex_System.
- Community_dial_office wikiPageWikiLink Distributed_switching.
- Community_dial_office wikiPageWikiLink Northern_Electric.
- Community_dial_office wikiPageWikiLink Private_branch_exchange.
- Community_dial_office wikiPageWikiLink Remote_concentrator.
- Community_dial_office wikiPageWikiLink Remote_switching_centre.
- Community_dial_office wikiPageWikiLink Strowger_switch.
- Community_dial_office wikiPageWikiLink Telephone_exchange.
- Community_dial_office wikiPageWikiLink Western_Electric.
- Community_dial_office wikiPageWikiLinkText "Community dial office".
- Community_dial_office wikiPageWikiLinkText "community dial office".
- Community_dial_office hasPhotoCollection Community_dial_office.
- Community_dial_office wikiPageUsesTemplate Template:Reflist.
- Community_dial_office wikiPageUsesTemplate Template:Telecommunications.
- Community_dial_office subject Category:Telephone_exchange_equipment.
- Community_dial_office hypernym Exchange.
- Community_dial_office type Company.
- Community_dial_office comment "A "Community Dial Office" (CDO) was a small Class 5 telephone exchange in a rural area.These most often provided capacity for 1000 or fewer customers and were designed for unattended operation. CDOs could be step by step, all relay or crossbar. Many offices provided four-digit local dialling to small rural communities where a call outside the local exchange was long distance.".
- Community_dial_office label "Community dial office".
- Community_dial_office sameAs m.02rflkl.
- Community_dial_office sameAs Q5154725.
- Community_dial_office sameAs Q5154725.
- Community_dial_office wasDerivedFrom Community_dial_office?oldid=661245951.
- Community_dial_office isPrimaryTopicOf Community_dial_office.