Analysis of VoIP data using incomplete call information

Ancillary data support in session initiation protocol (SIP)...

And-or multi-cast message routing method for high...

ANI-dormant connections for frame relay

Animated audio messaging

Anonymous call rejection

Anti-spam implementations in a router at the network layer

Anycast-based internet protocol redirection to alleviate...

Apparatus and a method for selecting an access router's...

Apparatus and method for a generic service locking mechanism...

Apparatus and method for a lightweight, reliable,...

Apparatus and method for a remote access server

Apparatus and method for a telephony gateway

Apparatus and method for a telephony gateway

Apparatus and method for a virtual hierarchial local area...

Apparatus and method for a voice portal

Apparatus and method for AAL2 packet switching on an ATM...

Apparatus and method for accessing memory in a TDM network

Apparatus and method for accessing wireless trunks on a...

Apparatus and method for an interface unit for data transfer...