Patent ID: 7512708
Filing Date: 2009-03-31
Classification: H04L

Abstract:
1. An IP-based teleconferencing communications system for handling an IP-based teleconferencing communications session with a destination IP-based teleconferencing communication system, comprising: a first IP-based teleconferencing terminal having at least one transport address for the IP-based teleconferencing communications session, an external server, and a proxy interface agent configured to act on behalf of the first IP-based teleconferencing terminal when in communication with the external server by establishing a logical channel on one or more connections between the first IP-based teleconferencing terminal and the external server, said logical channel serving as a control channel between the proxy interface agent and the external server, comprising a Network Address Port Translator (NAPT) configured to replace a first IP-based teleconferencing terminal IP address and first port in an outbound IP packet header with a proxy interface agent IP address and proxy interface agent port for traffic outbound from the first IP-based teleconferencing terminal and to replace the proxy interface agent IP address and proxy interface agent port in an inbound IP packet header with the first IP-based teleconferencing terminal IP address and the first port for traffic inbound to the first IP-based teleconferencing terminal.