NL7809428A
(en )
1979-03-20
TELECOMMUNICATIONS SWITCHING SYSTEM.
JPS5234606A
(en )
1977-03-16
Telephone switching system
FR2344198A1
(en )
1977-10-07
TELECOMMUNICATIONS NETWORK
NZ186827A
(en )
1982-02-23
Dm switching information samples through parallel networks
DK380478A
(en )
1979-03-02
TIME SHARING TELECOMMUNICATION SYSTEM
BE870252A
(en )
1979-01-02
INTEGRATED SWITCHING AND TRANSMISSION NETWORK
JPS5314509A
(en )
1978-02-09
Time division telephone switching system
FI782046A7
(en )
1978-12-31
TELECOMMUNICATIONS SYSTEM
BR7606542A
(en )
1977-07-05
AUTOMATIC TELECOMMUNICATION SWITCHING EQUIPMENT
DK119681A
(en )
1981-10-04
TELEPHONE LISTENER
SE7808591L
(en )
1979-02-18
TIME SHARING DIGITAL SWITCHING SYSTEM
MX143916A
(en )
1981-07-31
IMPROVEMENTS IN SWITCHING NETWORK FOR A TELEPHONE CENTER
BE863219A
(en )
1978-05-16
RAIL SWITCHING
PL201712A1
(en )
1978-08-28
METHOD OF SWITCHING TIME CHANNELS IN POLAUTOMATIC, INTERCITY TELEPHONE TRAFFIC
NL7614417A
(en )
1977-06-28
TELECOMMUNICATIONS SWITCHING SYSTEM.
GB1557661A
(en )
1979-12-12
Telecommunication switching networks
AR216779A1
(en )
1980-01-31
CONCENTRATION NETWORK FOR TELEPHONE CENTRAL
JPS5373843A
(en )
1978-06-30
Concrete block for channel construction
JPS5252512A
(en )
1977-04-27
Switching network
ES503476A0
(en )
1982-05-16
IMPROVEMENTS IN CENTRAL GOVERNMENT TELEPHONE SWITCHING FACILITIES
SE7903041L
(en )
1979-04-05
RADIO SYSTEM WITH SELECTIVE CALL BETWEEN INDIVIDUAL SUBSCRIBERS VIA A RELECENT CENTER
PL198187A1
(en )
1979-01-02
THE METHOD OF CALL SIGNALING IN TELEPHONE SETS, ESPECIALLY SERIAL
JPS5350904A
(en )
1978-05-09
Time division multiplex switching network
IE44806L
(en )
1977-09-30
Time multiplex switching networks
IT1097685B
(en )
1985-08-31
TELECOMMUNICATION OPERATION STATION