GB8619401D0
(en )
1986-09-17
Radio telephone equipment
EP0200704A3
(en )
1989-05-10
Bootstrap channel security arrangement for communication network
ZA869392B
(en )
1987-08-26
Telecommunications network and method
EP0217369A3
(en )
1989-02-22
Power transmission arrangement for telecommunications systems
EP0176089A3
(en )
1988-02-03
Multiple quadrature-phase amplitude modulating system capable of reducing a peak amplitude
GR861545B
(en )
1986-10-14
Improvements relating to telecommunication exchanges
GB2181023B
(en )
1989-04-05
Telecommunications switching system
DE3569318D1
(en )
1989-05-11
Multi-direction time division multiplex communication apparatus
GB8525591D0
(en )
1985-11-20
Communications network
MY100558A
(en )
1990-11-15
Arrangement for establishing wwide band connection in a switching network.
GB8531760D0
(en )
1986-02-05
Telephone equipment
GB2183967B
(en )
1989-10-11
Constant power telephone line circuit
NZ214959A
(en )
1988-07-28
Synthesised voice message provides telephone traffic condition
GB2171274B
(en )
1988-09-01
Telephone subset
GB8618458D0
(en )
1986-09-03
Power line carrier communication system
ES8801074A1
(es )
1987-12-01
Mejoras en medios para la distribucion de senales de television digitalizadas.
ES8801070A1
(es )
1987-12-01
Un sistema para proporcionar servicio de datos a abonados de centrales telefonicas de circuitos conmutados
EG17962A
(en )
1991-12-30
Arrangement for establishing wide band connection in a switching network
EP0228830A3
(en )
1989-02-15
Communications network
GB8410368D0
(en )
1984-05-31
Telecommunication switching system
DE3667122D1
(en )
1989-12-28
Communication method and equipment therefor
EP0237656A3
(en )
1988-07-27
Telecommunication line circuit and amplifier circuit used therein
ZA777631B
(en )
1978-10-25
A concentration network for a time division multiplex telephone exchange with pulse amplitude modulation
SU762208A2
(en )
1980-09-07
Communication channels multiplexing and switching apparatus
GR861642B
(en )
1986-08-01
Circuit arrangement to align the pcm groups entering communication branch point one another