T-s-t-s-t digital switching network

Table for handling various aal protocols in an atm-mode

Tailored hierarchical cell structures in a communications...

Tariff determination in mobile telecommunication networks

Tdm circuit-switching arrangement that handles frames of...

Tdm switching apparatus

Tdm/tdma distribution network

Tdma communication system having common local path medium...

Technique for dynamically prioritizing communication calls...

Technique for frequency detection utilizing switching filters

Technique for providing an improved signaling network for...

Technique for use in processing telephone calls

Telecommunication channel selection device

Telecommunication device

Telecommunication exchange

Telecommunication exchange employing crosspoint switches

Telecommunication exchange system

Telecommunication exchanges

Telecommunication exchanges

Telecommunication exchanges