Patent ID: 9253332
Filing Date: 2016-02-02
CPC Classification: H04L,H04M,H04N

Claim Text:
1. A method for supporting a multi-participant audio/video conference call, the method comprising: receiving first audio data from a Public Switched Telephone Network (PSTN) client; receiving second audio data from a moderator; receiving third audio data, video data, and collaboration data from at least one remote client through a first Virtual Private Network (VPN) tunnel; mixing the first audio data from the PSTN client with the second audio data from the moderator into a first mixed audio data; transmitting the first mixed audio data to the remote client through the first VPN tunnel; mixing the second audio data from the moderator with the third audio data from the remote client into a second mixed audio data; and transmitting the second mixed audio data to the PSTN client.