JPS52143702A
(en )
1977-11-30
System for directly connecting aid of telephone circuit networks
GB1541342A
(en )
1979-02-28
Digital data communication apparatus
AU2312377A
(en )
1978-09-14
Television synchronizing apparatus
GB1543015A
(en )
1979-03-28
Method of and system for eliminating the side tone of a telephone station
AU2312277A
(en )
1978-09-14
Television synchronizing apparatus
IL52282A0
(en )
1977-08-31
Fault locating apparatus for digital transmission system
BE840558A
(fr )
1976-08-02
Procede et dispositif pour la mise en communication automatique de deux abonnes telephoniques
JPS5433610A
(en )
1979-03-12
Method of and device for transmitting in signal and fleming types of tdm communication system
GB2006574B
(en )
1982-02-10
Method of and device for jointly transmitting telephone and video signal on digitaltelephone lines
AU549255B2
(en )
1986-01-23
Subscriber line radio loopback testing
DE3071390D1
(en )
1986-03-13
Terminal apparatus for telecommunications lines
AU507973B2
(en )
1980-03-06
Telephone subscriber apparatus
SU684759A1
(ru )
1979-09-05
Устройство дл дистанционного контрол стартстопных искажений телеграфных сигналов с абонентского пункта
GB1546046A
(en )
1979-05-16
Transmitting and receiving circuit for subscriber telephone sets
ZA79633B
(en )
1980-02-27
Telephone subscriber apparatus
JPS52139302A
(en )
1977-11-21
Automatic circuit switching unit
GB2023961B
(en )
1982-08-11
Picture signal receiver/reproducer for facsimile
JPS5610764A
(en )
1981-02-03
Method of transmitting digital communication signal through fourrwire type
AU508108B2
(en )
1980-03-06
Subscribers line equipment
YU77080A
(en )
1982-10-31
Tone receiver for telecommunication systems
AU3183077A
(en )
1979-06-28
Telecommunications transmission apparatus
JPS54126407A
(en )
1979-10-01
Device for monitoring quality of digital transmission signal
JPS5323227A
(en )
1978-03-03
Device for monitoring receiving state of television receiver
SU587631A1
(ru )
1978-01-05
Устройство дл телеконтрол регенераторов систем св зи
JPS5327783A
(en )
1978-03-15
Method of calling terminal equpment of remote monitor apparatus