AR244479A1
(en )
1993-10-29
Subscriber unit for telephone system
IL73693A0
(en )
1985-02-28
Telephone call accounting system
DE3571542D1
(en )
1989-08-17
Telecommunication system, in particular telephone system
ZA844006B
(en )
1985-01-30
Telephone multiparty line adaptor
JPS57109436A
(en )
1982-07-07
Subscriber's telephone set
IL82773A0
(en )
1987-12-20
Telephone line monitoring system
IL67553A0
(en )
1983-05-15
System for transmitting messages to a telephone set through the subscriber's line in a telephone system
DE3369048D1
(en )
1987-02-12
Subscriber telephone system
DE3368162D1
(en )
1987-01-15
Activation in a digital subscriber connection
ZA807678B
(en )
1981-12-30
Subscriber's line interface
JPS57162565A
(en )
1982-10-06
Subscriber's line interface circuit remote testing system
GB8422787D0
(en )
1984-10-17
Telephone subscriber junctor
GB2132448B
(en )
1986-03-12
Telephone subscribers' line interface circuit
ZA829500B
(en )
1983-09-28
System for transmitting messages to a telephone set through the subscriber's line in a telephone system
GB2147480B
(en )
1986-11-05
Telephone subscriber line battery feed resistor arrangements
SG42187G
(en )
1987-07-17
Telephone ringing signal generation
GB2138247B
(en )
1985-09-11
Telephone transfer system
JPS56164660A
(en )
1981-12-17
Subscriber's line interface circuit
GB8330313D0
(en )
1983-12-21
Delivering signal on telephone line
GB2113043B
(en )
1985-12-11
Telephone dialling system
GB2138655B
(en )
1986-08-13
Telephone subscriber's apparatus
PT72376A
(en )
1981-02-01
Telephone subscriber's line interface
GB8414479D0
(en )
1984-07-11
Telephone system
GB8312910D0
(en )
1983-06-15
Builder's cradle
IE802554L
(en )
1981-06-06
Line feeding arrangement for telephone subscriber's line