Network-based call interface device for real-time packet...
Network-based method and apparatus for initiating and...
Network-based telephony gateway and network-based telephony...
No-addressing modular-assembly Ethernet switch with a G.Link
Node apparatus and packet communication method for...
Node device and method for controlling label switching path...
Non-server type voice packet communication device and method
Number portability for an IMS network
Number portability in a communications system