Improving the performance of a mobile cellular communication...

Improving the security of mobile telephones against...

In service for central network operator allocation of...

In-building and out-of-building personal reach...

In-service activator for a broadband exchanger

In-service upgrade for a telecommunication system

Incoming call control for wireless sets

Incoming call routing

Incoming calling system

Increasing capacity in a cellular communications system by...

Increasing the capacity of a cellular radio network

Increasing the capacity of a personal communication service...

Increasing the capacity of a personal communication service...

Incremental network routing

Incrementally adjustable digital attenuator/amplifier

Indirect addressing apparatus for small computer

Individual subchannel loopback in the pcm interfaces of a...

Induction cancellation circuit for telephone loop circuit...

Information communication system

Information filter and steering circuit