From packet8's most recent 10K filing:
### We developed the core software associated with the Virtual Office product line including the call control engine, protocol stacks and network address translation (NAT) traversal firmware for the customer premise equipment. As a result, we are able to update the software functionality of our services without third party assistance and limit the distribution of our unique customer premise equipment features such as NAT traversal to customer premise equipment that is sold in conjunction with our services. ### There is no way they could do what they do if they limited themselves to configuring existing devices. David Hiers CCIE (R/S, V), CISSP ADP Dealer Services 2525 SW 1st Ave. Suite 300W Portland, OR 97201 o: 503-205-4467 f: 503-402-3277 -----Original Message----- From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Carlos Alvarez Sent: Monday, August 23, 2010 8:56 AM Cc: voiceops at voiceops.org Subject: Re: [VoiceOps] "...but it works with Packet8" Alex Balashov wrote:
This is extremely unlikely, unless they inherited one via licensing from an acquisition.
Developing a SIP stack is a surprisingly capital-intensive endeavour, at least, when it comes to working out interop issues and bugs, as well as natural race conditions arising from a literal interpretation of RFC 3261. All that testing and R&D is hard to afford. That's why the only good SIP stacks have been around for at least ten years (though, from this it does not follow that just because a SIP stack has been around for ten years means it's any good).
I wouldn't say it's trivial to do it, but one of our partners has a 100% custom-written and RFC-compliant stack and softphone which goes to great lengths to penetrate any NAT--they guarantee it. Licensing starts at $42,000, however for a company the size of Packet 8 that would be trivial. -- Carlos Alvarez TelEvolve 602-889-3003 _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system.