CA977479A
(en )
1975-11-04
Telephone dialling arrangement
CA925233A
(en )
1973-04-24
Subscriber telephone circuit
CA998149A
(en )
1976-10-05
Conference circuits for use in telecommunications systems
CA949245A
(en )
1974-06-11
Telephone subscriber line circuit
CA992228A
(en )
1976-06-29
Key telephone line circuit
CA1020654A
(en )
1977-11-08
Telephone exchanges
AU464070B2
(en )
1972-08-10
Multistage time division network. suitable for use notably in telephone switching
AU2518371A
(en )
1972-08-10
Multistage time division network. suitable for use notably in telephone switching
CA871833A
(en )
1971-05-25
Telephone paystation
AU460275B2
(en )
1972-06-29
Eemporary connection or time division network device with stages, adapted for use more particularly in telephone switching
HK28577A
(en )
1977-06-17
Multi-stage switching networks for use in telecommunications exhanges
AU2366670A
(en )
1972-06-29
Eemporary connection or time division network device with stages, adapted for use more particularly in telephone switching
AU2174070A
(en )
1972-05-04
Telephone sets
CA938040A
(en )
1973-12-04
Telephone subscriber line circuit
AU467225B2
(en )
1975-11-27
Multistage switching network
CA887333A
(en )
1971-11-30
Telephone switching system
CA870835A
(en )
1971-05-11
Telephone switching system
AU465499B2
(en )
1972-11-09
Improvements in telephone switching systems
CA865885A
(en )
1971-03-09
Multi-stage electronic switching network
AU465604B2
(en )
1975-10-02
Switching network
CA874671A
(en )
1971-06-29
Switching network
CA873033A
(en )
1971-06-08
Switching network
CA873032A
(en )
1971-06-08
Switching network
CA920290A
(en )
1973-01-30
Coin operated telephone network allowing limited free calls
AU490662B2
(en )
1976-01-29
Improvements in pushbutton calling circuits for telephone sets