GB2138654B
(en )
1985-06-05
Telephone switching system
ES470733A1
(en )
1979-09-16
Method and apparatus for signaling and framing in a time division multiplex communication system
GB8312984D0
(en )
1983-06-15
Receivers for telephone subscriber line
DE3162766D1
(en )
1984-04-26
Time division multiplex telecommunication digital switching module
DE3169256D1
(en )
1985-04-18
Single channel duplex communication system
GB1538995A
(en )
1979-01-24
Time division multiplexed pabx communication switching system
ZA781054B
(en )
1979-01-31
Switch-through units for pcm t.d.m.switching networks
AU5006585A
(en )
1986-05-29
Channel assignment system for loop network
JPS57119549A
(en )
1982-07-26
Conference telephone system
JO1049B1
(en )
1982-07-10
Telephone switch for timedivision multiplex system, particularly for pam telephone exchangers
DE3369048D1
(en )
1987-02-12
Subscriber telephone system
DE3376730D1
(en )
1988-06-23
Telephone switching system
GB1556960A
(en )
1979-12-05
Multi stage switchung network for timedivision multiplex operation
JPS57211897A
(en )
1982-12-25
Central control time division multiplex telephone exchange system such as pcm telephone exchange system circuit device
JPS52103904A
(en )
1977-08-31
Network for connecting pcmtdm automatic telephone switching system
IL65948A0
(en )
1982-09-30
Circuit arrangement for timedivision multiplex telecommunication exchange systems
JPS53116022A
(en )
1978-10-11
Time division multiplex communication system for connecting between twoowire channels
JPS56169989A
(en )
1981-12-26
Multiplex line telephone set
JPS5776936A
(en )
1982-05-14
Channel terminating circuit for connecting communication channel
GB2049355B
(en )
1983-02-16
Telephone switches for time division multiplex systems
JPS57119548A
(en )
1982-07-26
Conference telephone system
IL65949A0
(en )
1982-09-30
Circuit arrangement for timedivision multiplex telecommunication exchange systems
JPS57171834A
(en )
1982-10-22
Multiplex communication system of switching device
JPS5778295A
(en )
1982-05-15
Subscriber line concentrator allocating system
GB2131246B
(en )
1986-04-03
Subscriber communication channel equipment