Vonage advertises that they offer free three-way calling. Based on some web postings, I gather they use RTP proxy. So I thought they bridge the media flow in their network equipment. I came across a post that says: “Three-way calls: I took protocol traces of a 3-way call. I noticed that the ATA sets up 2 separate calls and does the voice path bridging in the ATA.” If this statement is indeed true, then can Vonage rightfully claim that they are offering free three-way calling?
Posted by aswath at January 23, 2004 11:42 AM
After thinking some more, I fell that there is no clear cut answer. If at least one of the calls is an on-net call, then one can argue like I did, Vonage is not doing anything additional than the basic service. But if both the calls are to PSTN, then they are incurring the charges for two calls simultaneously, a deviation from the norm.
Posted by: Aswath at January 24, 2004 05:49 PM