On Tue, 6 Jul 2004, Tim Fournet wrote: > and long distance. Only downside to Packet8 is that they don't support > devices other than their own, so you can't plug in your own SIP phone or > soft-phone into their network.. Hopefully that'll change at some point.
That is because they are using proprietary extensions to the SIP protocol to allow NAT traversal. Vonage and FWD do this also. Standard SIP embeds IP addresses in the data portion of the packet, so NAT breaks it. There are workarounds, but no standard (that i know of) for SIP and NAT to play nice. I don't think you'll be able to buy your own phone until the limitations in SIP are fixed. ray
