GB183304A - - Google Patents

Info

Publication number
GB183304A
GB183304A GB183304DA GB183304A GB 183304 A GB183304 A GB 183304A GB 183304D A GB183304D A GB 183304DA GB 183304 A GB183304 A GB 183304A
Authority
GB
United Kingdom
Prior art keywords
subscriber
relay
local
connector
incoming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
English (en)
Publication date
Publication of GB183304A publication Critical patent/GB183304A/en
Expired legal-status Critical Current

Links

Landscapes

  • Interface Circuits In Exchanges (AREA)
GB183304D Expired GB183304A (de)

Publications (1)

Publication Number Publication Date
GB183304A true GB183304A (de) 1900-01-01

Family

ID=1733828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB183304D Expired GB183304A (de)

Country Status (1)

Country Link
GB (1) GB183304A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746355C (de) * 1931-07-23 1944-07-29 Normalzeit G M B H Schaltungsanordnung fuer Fernsprechnebenstellenanlagen mit Waehlerbetrieb
DE764328C (de) * 1933-12-09 1954-05-24 Mix & Genest A G Schaltungsanordnung fuer selbsttaetige Untervermittlungsstellen mit getrennten Einstell- und Sprechwegen und Rueckfragemoeglichkeit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746355C (de) * 1931-07-23 1944-07-29 Normalzeit G M B H Schaltungsanordnung fuer Fernsprechnebenstellenanlagen mit Waehlerbetrieb
DE764328C (de) * 1933-12-09 1954-05-24 Mix & Genest A G Schaltungsanordnung fuer selbsttaetige Untervermittlungsstellen mit getrennten Einstell- und Sprechwegen und Rueckfragemoeglichkeit

Similar Documents

Publication Publication Date Title
US2650950A (en) Telephone line lockout adapter
US3182134A (en) Circuit for interconnecting a number of calling lines
US2335481A (en) Telephone system
US3144517A (en) Add-on circuit for step-by-step systems
US3133995A (en) Call awaiting signal telephone circuits
US3637947A (en) Call forwarding arrangement for telephone answering service systems
GB183304A (de)
US2020816A (en) Automatic telephone system
US2976368A (en) Incoming trunk circuit for in-dialing service
US3306983A (en) Call transfer system
GB388752A (en) Improvements in or relating to telephone systems
US3517139A (en) Auxiliary telephone line circuit for call-waiting service
US2391389A (en) Telephone system
US3320367A (en) Telephone line circuit
US2065894A (en) Telephone system
US2744963A (en) Multi-office telephone system
US1927531A (en) Telephone system
US2549688A (en) Magneto party-line adapter
US2863949A (en) Telephone system
US2142658A (en) Telephone system
US3041405A (en) Line circuit with two-way transfer
US1868326A (en) Telephone system
US1990437A (en) Telephone system
US2139247A (en) Telephone system
US1575334A (en) Telephone system