SYSTEM AND METHOD FOR ENABLING SECURE CONNECTIONS FOR H.323 VoIP CALLS

摘要

A method of providing secure signaling connections and media connections for packet data network telephony calls. A secure registration request message containing an encryption technique and public key is sent from an originating gateway (105) over a packet data network (100) to a terminating gateway (105). The terminating gateway (105) returns a secure confirmation message containing a digital certificate over the packet data network (100) to the originating gateway (105). Once registered, further communication between the gateways (105) is encrypted over the packet data network (100) using the public key and encryption technique specified in the secure registration request message. The gateways (105) can be linked to other incompatible networks such as the PSTN (115) or wireless telephony (120) networks in order to provide telephone capability among POTS (125), wireless (130), and IP (140) phones.