Pabx through connection of extensions to public network - uses common control initiated relay closures to directly connect extension to public network through a connection unit

Pabx through connection of extensions to public network - uses common control initiated relay closures to directly connect extension to public network through a connection unit

Switching relay operation for connecting extensions on a PABX through to the public network in the dial inter train pause period and by using the PABX common control. The extension (NA) and public network (OEF) are connected using a relay contact connected signal transmission unit (VU). The PABX com...

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Bibliographische Detailangaben
1. Verfasser: MERZ,LOTHAR
Format: Patent
Sprache:eng ; ger
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
SELECTING
TELEPHONIC COMMUNICATION
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Beschreibung
Zusammenfassung:Switching relay operation for connecting extensions on a PABX through to the public network in the dial inter train pause period and by using the PABX common control. The extension (NA) and public network (OEF) are connected using a relay contact connected signal transmission unit (VU). The PABX common control (ZF) responds to seizures and uses relay switching (Z,F) to connect extension (NA) to public network (OEF) using a low resistance relay contact path (r1,4d,5d etc.).