Panel call indicator (original) (raw)
Panel Call Indicator, or PCI, is a form of signalling used between two telephone offices. It was also originally called Relay Call Indicator (RCI). Originally designed along with the panel type telephone office, PCI was intended to allow subscribers in fully automated exchanges to dial numbers in manual offices the same way they dialed numbers in their own exchange. For PCI to achieve its purpose, the panel office sent the requested number to the manual office, where the number was lit on an operator's display. The switchboard operator at a PCI-aware manual office reads the number from the call indicator display and completes the call in the usual way. As a format of interoffice signaling, PCI is one of multiple options retained for compatibility in the #5 Crossbar switch, a later system w
| Property | Value |
|---|---|
| dbo:abstract | Panel Call Indicator, or PCI, is a form of signalling used between two telephone offices. It was also originally called Relay Call Indicator (RCI). Originally designed along with the panel type telephone office, PCI was intended to allow subscribers in fully automated exchanges to dial numbers in manual offices the same way they dialed numbers in their own exchange. For PCI to achieve its purpose, the panel office sent the requested number to the manual office, where the number was lit on an operator's display. The switchboard operator at a PCI-aware manual office reads the number from the call indicator display and completes the call in the usual way. As a format of interoffice signaling, PCI is one of multiple options retained for compatibility in the #5 Crossbar switch, a later system which served as the platform for the initial DTMF push-button telephone services. In the British Director telephone system, Coded-Call Indicator working (CCI) filled a similar role, as it displayed dialed telephone numbers at the local manual exchange in a mixed (automatic and manual) linked-number area. (en) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Panel_Call_Indicator_Display.jpg?width=300 |
| dbo:wikiPageID | 18762905 (xsd:integer) |
| dbo:wikiPageLength | 7101 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1072062759 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Binary-coded_decimal dbr:Number_Five_Crossbar_Switching_System dbr:Signalling_(telecommunications) dbc:Telephony_signals dbr:Switchboard_operator dbr:Electrical_resistance dbr:Endianness dbr:Panel_switch dbr:Party_line_(telephony) dbr:Synchronization dbr:Telephone_switchboard dbr:Dual-tone_multi-frequency_signaling dbr:Linked_numbering_scheme dbr:Direct_current dbr:Director_telephone_system dbr:Rotary_dial dbr:Telephone_exchange dbr:Push-button_telephone dbr:Bit dbr:Sender dbr:Seven_segment_display dbr:Tandem_office dbr:Biquinary_code dbr:File:PCI-signaling-graph.png dbr:File:Panel-Call-Indicator-Code.png dbr:File:Panel_Call_Indicator_Display.jpg |
| dbp:wikiPageUsesTemplate | dbt:Reflist |
| dcterms:subject | dbc:Telephony_signals |
| gold:hypernym | dbr:Form |
| rdf:type | yago:WikicatTelephonySignals yago:Abstraction100002137 yago:Communication100033020 yago:Signal106791372 |
| rdfs:comment | Panel Call Indicator, or PCI, is a form of signalling used between two telephone offices. It was also originally called Relay Call Indicator (RCI). Originally designed along with the panel type telephone office, PCI was intended to allow subscribers in fully automated exchanges to dial numbers in manual offices the same way they dialed numbers in their own exchange. For PCI to achieve its purpose, the panel office sent the requested number to the manual office, where the number was lit on an operator's display. The switchboard operator at a PCI-aware manual office reads the number from the call indicator display and completes the call in the usual way. As a format of interoffice signaling, PCI is one of multiple options retained for compatibility in the #5 Crossbar switch, a later system w (en) |
| rdfs:label | Panel call indicator (en) |
| owl:sameAs | freebase:Panel call indicator yago-res:Panel call indicator wikidata:Panel call indicator https://global.dbpedia.org/id/4tKWj |
| prov:wasDerivedFrom | wikipedia-en:Panel_call_indicator?oldid=1072062759&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/PCI-signaling-graph.png wiki-commons:Special:FilePath/Panel-Call-Indicator-Code.png wiki-commons:Special:FilePath/Panel_Call_Indicator_Display.jpg |
| foaf:isPrimaryTopicOf | wikipedia-en:Panel_call_indicator |
| is dbo:wikiPageDisambiguates of | dbr:PCI |
| is dbo:wikiPageRedirects of | dbr:Panel_Call_Indicator dbr:Coded-Call_Indicator dbr:Coded_Call_Indicator |
| is dbo:wikiPageWikiLink of | dbr:PCI dbr:Machine_to_machine dbr:Telephone_exchange dbr:Panel_Call_Indicator dbr:Coded-Call_Indicator dbr:Sender dbr:Non-dialable_point dbr:Coded_Call_Indicator |
| is foaf:primaryTopic of | wikipedia-en:Panel_call_indicator |
