The question is "what gateways work with Exchange". I'd have to hunt it down, but there is a certified gateway partner listing somewhere on Microsoft.com.
In general, anything that talks TCP SIP should work. Exchange UM is more-or-less equivalent in concept to Unity - that is, Unified Messaging (Unity and its various add-ons are far more mature in feature set - but the average business user wouldn't notice). OCS 2007 R2 is more-or-less equivalent in concept to CallManager - that is, a software-based PBX. In terms of PBX functionality, CallManager wins, hands-down. In terms of other functionality - IM, presence, Office integration, whiteboarding, screen sharing; OCS 2007 R2 wins, hands-down. Regards, Michael B. Smith Consultant and Exchange MVP http://TheEssentialExchange.com From: Richard Stovall [mailto:rich...@gmail.com] Sent: Tuesday, February 16, 2010 5:09 PM To: MS-Exchange Admin Issues Subject: Re: Exchange 20007/2010 voice mail with multiple extension This conversation brings up the question about what phone hardware out there "works with Exchange?" I haven't been able to find any good/definitive resources. To the original poster, does this question mean that you are looking at replacing Unity with OCS 2007 R2? Please forgive me if that's a ridiculous question. I'm coming to the whole UC/UM arena from a place of complete ignorance. Thanks, RS On Tue, Feb 16, 2010 at 3:34 PM, Senter, John <john.sen...@etrade.com<mailto:john.sen...@etrade.com>> wrote: 7 From: Maglinger, Paul [mailto:pmaglin...@scvl.com<mailto:pmaglin...@scvl.com>] Sent: Tuesday, February 16, 2010 3:27 PM To: MS-Exchange Admin Issues Subject: RE: Exchange 20007/2010 voice mail with multiple extension Just curious, what version of Unity are you using? From: Senter, John [mailto:john.sen...@etrade.com<mailto:john.sen...@etrade.com>] Sent: Tuesday, February 16, 2010 2:11 PM To: MS-Exchange Admin Issues Subject: Exchange 20007/2010 voice mail with multiple extension We are investigating replacing our Cisco Unity voicemail system with Exchange UM, looking at 2007 and 2010. In Unity you can assign multiple extensions to a single mailbox. Is this possible with Exchange UM? I have not found anywhere to indicate a extra number location. Thanks