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INST fur NACHRICHTENTECHNIK
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INST fur NACHRICHTENTECHNIK
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Publication of DE2314953A1publicationCriticalpatent/DE2314953A1/de
H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
H04Q3/625—Arrangements in the private branch exchange
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04M—TELEPHONIC COMMUNICATION
H04M3/00—Automatic or semi-automatic exchanges
H04M3/42—Systems providing special services or facilities to subscribers
H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
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Engineering & Computer Science
(AREA)
Physics & Mathematics
(AREA)
Astronomy & Astrophysics
(AREA)
General Physics & Mathematics
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Sub-Exchange Stations And Push- Button Telephones
(AREA)
DE197323149531972-04-111973-03-26Schaltungsanordnung zur anschaltung von nachtstellen in fernsprechnebenstellenanlagen mit rueckfrageverkehr
PendingDE2314953A1
(de)
Schaltungsanordnung zum automatischen Umlegen einer zu einer Teilnehmerstelle von einem entfernten Vermittlungsamt ueber eine oertliche Vermittlungsstelle hergestellten Verbindung
Schaltungsanordnung fuer Fernmeldeanlagen, insbesondere Fernsprechnebenstellenanlagen zur UEbertragung unterschiedlicher Kennzeichen ueber eine zweiadrige Leitung