Services node routing service
Signal transfer point local number portability database...
Signaling method and network element for a virtual private...
Signaling network gateway device and method for use in a signali
Signaling network having common signaling node for protocol conv
Signaling protocol channel unit
Signaling protocol for multilink access network-local exchange i
Signaling protocol interface channel unit
Signaling server for processing signaling information in a...
Signaling state management system for packet network gateways
Signaling state management system for packet network gateways
Signaling system and method for enabling PBX-PBX feature transpa
Signalling in a telecommunication network
Simultaneous transfer of control information with voice and data
Simultaneous transmission of an analog pots signal and a...
Skills based routing method and system for call center
Soft network interface device for digital broadband local...
Software call control agent
Software circuit switching router using anchor channels
Solid state trunk circuit