Programming call-processing application in a switching system

Protecting communications network integrity

Protection of routers in a telecommunications network

Protection switching apparatus and method

Protection system for a distributed control automatic...

Protocols for very high-speed optical lans

Providing a neighborhood zone within a mobile...

Providing a value added service available in a first network...

Providing access to a distributed data processing system

Providing an accurate timing source for locating the...

Providing caller id within a mobile telecommunications network

Providing customer data to an automatic call distribution...

Providing gateway functionality in a virtual private network

Providing individual subscriber services in a cellular...

Providing selective reversal billing when calling roaming...

Provision of cellular wire-line service

Provision of operational definitions in a wireless...

Proximity-based registration in a communication system

Proxy database for element management system of telephone...

Pseudo-random frequency assignment