Polarization-insensitive optical switch and multiplexing...

Polling method in a radio data packet communication system

Polyphase phase lock oscillator

Portable multiplex bus exerciser

Portable radio telephones and methods of operation

Portable soft phone

Power balancing in dwdm optical networks

Power conserving technique for a communications terminal...

Power reduction in multiplex optical communication

Power saving system for time-division multiple access...

Power spectrum monitoring and management in a wavelength...

Preamble generation for data packet transmission in a...

Precoding of signature sequences for cdma systems

Predictive agc in tdm systems

Preemphasis of an optical wavelength multiplex signal

Preventing inter-set miscommunication while maintaining...

Printing telegraph apparatus

Printing telegraph system by radio

Priority packet transmission system for a shared...

Priority threaded message burst mechanism for tdma...