Switching system having selectively interconnected remote switch
Switching system having tone trunk
Switching system loopback test circuit
Switching system reliability
Switching system reliability
Switching system using identical switching nodes
Switching system with separate supervisory links
Switching system with time-stamped packet distribution input sta
Switching system with two-way line managing system
Switching tdm digital signals
Switching techniques for FDM communication systems
Switching unit for the transfer of digitized signals in PCM syst
Switching unit for the transfer of digitized signals in PCM syst
Symmetric method and apparatus for interconnecting emulated lans
Sync acquisition and tracking circuit for DS/CDMA receiver
Synchoronous packet voice/data communication system
Synchronism establishing method and apparatus
Synchronization apparatus in transmitting information on a simpl
Synchronization arrangement for time multiplexed data scanning c
Synchronization arrangements for a digital telecommunications ex