Scalable architecture for transmission of messages over a...

Scalable architecture for transmission of messages over a...

Scalable call management system

Scalable gatekeepers in an internet telephony system and a...

Scalable voice over IP system providing independent call...

Scaleable network server for low cost PBX

Scheduled internet protocol telephone instrument system

Screening inbound calls in a packet-based communications...

Screening inbound calls in a packet-based communications...

Secure access method, and associated apparatus, for accessing a

Secure ATM-based distributed virtual tandem switching system...

Secure ATM-based distributed virtual tandem switching system...

Secure LAN/internet telephony

Secure voice signaling gateway

Security gatekeeper for a packetized voice communication...

Selecting a network based on metrics for real time...

Selective bandwidth connectivity through network line cards

Selective establishment of telecommunications connections...

Selective feature blocking in a communications network

SEPARATE STRUCTURE OF A DATAPATH LAYER AND A PHYSICAL LAYER...