Method and apparatus for extending PBX features via the...

Method and apparatus for facilitating communication across multi

Method and apparatus for facilitating remote communications acce

Method and apparatus for handling calls requiring the...

Method and apparatus for handling subscription and administrativ

Method and apparatus for implementing a plurality of...

Method and apparatus for implementing an extensible range of...

Method and apparatus for implementing services in telephone netw

Method and apparatus for integrated multimedia call control

Method and apparatus for IP network call delivery

Method and apparatus for maintaining uninterrupted telecommunica

Method and apparatus for measuring loads in a common channel sig

Method and apparatus for network communication

Method and apparatus for observing and controlling a...

Method and apparatus for personal call routing request and...

Method and apparatus for prioritizing voice and data in a...

Method and apparatus for processing a sequence of calls

Method and apparatus for processing call signaling messages

Method and apparatus for processing FISU frames according to...

Method and apparatus for providing 56K modem technology for...