AU2612471A - Tripping arrangement for ringing current signals in telephone exchanges - Google Patents

Tripping arrangement for ringing current signals in telephone exchanges

Info

Publication number
AU2612471A
AU2612471A AU26124/71A AU2612471A AU2612471A AU 2612471 A AU2612471 A AU 2612471A AU 26124/71 A AU26124/71 A AU 26124/71A AU 2612471 A AU2612471 A AU 2612471A AU 2612471 A AU2612471 A AU 2612471A
Authority
AU
Australia
Prior art keywords
current signals
ringing current
telephone exchanges
tripping arrangement
tripping
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
AU26124/71A
Other versions
AU449198B2 (en
Inventor
Ove Bille Sandberg Curt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of AU449198B2 publication Critical patent/AU449198B2/en
Publication of AU2612471A publication Critical patent/AU2612471A/en
Expired legal-status Critical Current

Links

AU26124/71A 1970-03-19 1971-03-04 Tripping arrangement for ringing current signals in telephone exchanges Expired AU449198B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SESE3787/70 1970-03-19

Publications (2)

Publication Number Publication Date
AU449198B2 AU449198B2 (en) 1972-09-07
AU2612471A true AU2612471A (en) 1972-09-07

Family

ID=

Similar Documents

Publication Publication Date Title
CA1026028A (en) Loudspeaking telephone circuit
CA925233A (en) Subscriber telephone circuit
AU449198B2 (en) Tripping arrangement for ringing current signals in telephone exchanges
CA927535A (en) Tripping arrangement for ringing current signals in telephone exchanges
AU2612471A (en) Tripping arrangement for ringing current signals in telephone exchanges
CA938040A (en) Telephone subscriber line circuit
CA869173A (en) Telephone switching system
CA859254A (en) Subscriber telephone circuit
CA916326A (en) Telephone set switch-hook stop
CA791228A (en) Telephone conference circuit
CA849110A (en) Telephone exchanges
AU424026B2 (en) Telephone answering machines
AU418989B2 (en) Improvements in telephone switchboards
CA800671A (en) Telephone switchhook
AU441303B2 (en) Interrupter for ringing signals from automatic telephone exchanges
CA782007A (en) Telephone answering system
CA858654A (en) Telephone call timing circuit
AU465499B2 (en) Improvements in telephone switching systems
CA844063A (en) Telephone switching system
CA32551S (en) Telephone switchboard
AU413177B2 (en) Subscriber telephone circuit
CA737060A (en) Loud-speaking telephone
AU419441B2 (en) Telephone switching system
CA832664A (en) Switching networks for use in telecommunication exchanges
AU2674067A (en) Telephone switching