BE417701A - - Google Patents

Info

Publication number
BE417701A
BE417701A BE417701DA BE417701A BE 417701 A BE417701 A BE 417701A BE 417701D A BE417701D A BE 417701DA BE 417701 A BE417701 A BE 417701A
Authority
BE
Belgium
Prior art keywords
subscriber
call
central office
line
relay
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE417701A publication Critical patent/BE417701A/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
BE417701D BE417701A (en, 2012)

Publications (1)

Publication Number Publication Date
BE417701A true BE417701A (en, 2012)

Family

ID=80358

Family Applications (1)

Application Number Title Priority Date Filing Date
BE417701D BE417701A (en, 2012)

Country Status (1)

Country Link
BE (1) BE417701A (en, 2012)

Similar Documents

Publication Publication Date Title
US3626107A (en) Three-way calling and call-waiting arrangements for step-by-step telephone systems
BE417701A (en, 2012)
US2133814A (en) Telephone system
US1218806A (en) Telephone trunking system.
BE431601A (en, 2012)
US1484134A (en) Telephone system
BE428323A (en, 2012)
BE455605A (en, 2012)
BE388787A (en, 2012)
GB393583A (en) Improvements in or relating to telephone systems
BE377986A (en, 2012)
BE416525A (en, 2012)
CH99878A (fr) Installation téléphonique pour bureau central à commutations automatiques.
BE371806A (en, 2012)
BE440777A (en, 2012)
BE353077A (en, 2012)
BE410069A (en, 2012)
BE417423A (en, 2012)
JPH0329348B2 (en, 2012)
BE427075A (en, 2012)
BE352110A (en, 2012)
BE429502A (en, 2012)
BE427161A (en, 2012)
BE393936A (en, 2012)
GB191218498A (en) Improved Circuit Arrangements for Automatic Telephone Systems.