Method and apparatus for providing a time-division...
Method and apparatus for providing a virtual distributed...
Method and apparatus for providing bifurcated transport of...
Method and apparatus for providing broadband access...
Method and apparatus for providing caller identification...
Method and apparatus for providing circuit and...
Method and apparatus for providing customer specified...
Method and apparatus for providing efficient circuit...
Method and apparatus for providing fault tolerance to...
Method and apparatus for providing forwarding on...
Method and apparatus for providing integrated routing for...
Method and apparatus for providing integrated voice and data...
Method and apparatus for providing integrated voice and data...
Method and apparatus for providing internet call waiting...
Method and apparatus for providing internet call waiting...
Method and apparatus for providing network-based interaction
Method and apparatus for providing quality of service...
Method and apparatus for providing real-time packetized...
Method and apparatus for providing ringing timeout...
Method and apparatus for providing ringing timeout...