ProVoice

I found this tonight. It looks to me like it is compliant.

http://www.macom-wireless.com/products/p25/default.asp Link to site

Copied from above site. M/A-COM's P25IP fully meets the NTIA mandate and also satisfies the DoD policy for P25 compliance. M/A-COM has combined the benefits of our IP-based network-centric solution with the standard common-air-interface of P25. The combination, called P25IP, or P25 to the Power of IP, is the best of two worlds for Federal users - namely: P25IP combines the global ubiquitous IP infrastructure standard with the P25 digital over-the-air protocol. M/A-COM's P25IP system is a drastic shift from this circuit switched central control world, to the flexible packet switched IP universe. The system provides both network-level and over-the-air radio level interoperability. This state-of-the-art IT solution provides flexibility, scalability and is future-ready. For more information see our Brochure or Technical Overview.

Talked to M/A-COM dealer who said "Provoice has been around longer than P25 has been. Provoice has nothing to do with P25. P25 is a separate communications protocol that has been standardized by FCC so different manufactures equipment can communicate in digital format. Provoice is a proprietary communications protocol that M/A-COM owns. Provoice is a digital voice encryption scheme that M/A-COM uses on their EDACS networks for secure traffic, EDACS is not a P25 system either and will never be. The terminals on M/A-COM's systems are feature capable to operate P25 and can operate P25, but the user would have to switch channels to operate it in P25. P25 is P25 and nothing else. Just a communications standards system that is digital. I hope this helps you in understanding the basics."