[cisco-voip] Unity UM talking to a remote Exchange server across WAN

[Pat Hayes]

The design requirements are there because, among other things, Unity is 
pulling data in real time from exchange while users are on the phone 
with it and keeping MWIs in sync. Even if you can straighten out the 
delivery problem, you're going to have a negative user experience one 
way or another if you can't bring Unity to the mailboxes or the 
mailboxes to Unity.

Is CUE an option for these users? Or, maybe you could create a separate 
'voice mail only' mailbox for these users on the local exchange server, 
and then setup IMAP access to those mailboxes in the remote user's 
Outlook clients?

-------- Original Message  --------
From: Matthew Saskin <matt at saskin.net>
To: Karl Whitson <KWhitson at cmbtec.com>
Cc: cisco-voip at puck.nether.net
Subject: Re:[cisco-voip] Unity UM talking to a remote Exchange server 
across WAN
Date: 3/20/2008 1:27 PM

> I've tried the same thing at about 250ms RTT...let's just say my remote 
> exchange server was not a happy camper :)
> 
> As much as I preach following the guidelines, do you have a lab 
> environment you can test something like this in (with some device to 
> simulate latency)?
> 
> -matt
> 
> Karl Whitson wrote:
>> Voice Voob,
>>  
>> Thanks for the reply.  I agree with you and I always preach to my 
>> customers to follow the design guides.  This was a last minute "find" 
>> that everyone forgot to mention in the presales cycle and I am just 
>> looking for a quick way of getting them online until a more permanent 
>> (and correct) solution can be implemented.  I hate to have this company 
>> all on Cisco Unified Communications except this one remote site.
>>  
>> Karl Whitson
>> CMB Technologies
>> DID:  508.422.8413
>> Cell:  603.930.4189
>>
>> ------------------------------------------------------------------------
>> *From:* Voice Noob [mailto:voicenoob at gmail.com]
>> *Sent:* Thu 3/20/2008 9:19 AM
>> *To:* Karl Whitson
>> *Cc:* cisco-voip at puck.nether.net
>> *Subject:* Re: [cisco-voip] Unity UM talking to a remote Exchange server 
>> across WAN
>>
>> I would recommend following the design guides. I have worked on several 
>> customers where if the initial installer would have followed the SRND 
>> they wouldn't need me to hire me to solve their problems.
>>
>> On Thu, Mar 20, 2008 at 8:09 AM, Karl Whitson <KWhitson at cmbtec.com 
>> <mailto:KWhitson at cmbtec.com>> wrote:
>>
>>     All,
>>      
>>     I am looking for recommendations for an issue I am having.
>>      
>>     Scenario:
>>     Unity 5.0 UM server at HQ site talking to Exchange 2007 Partner
>>     server.  Users homed on 2007 server as well as an additional
>>     Exchange 2003 server at HQ.  These users function correctly and
>>     everything is great.
>>     I also have a remote site that has an Exchange 2003 server in the
>>     same AD domain.  Unity UM at HQ can not deliver voicemails to users
>>     homed on that remote server.  TAC states that the reason is that
>>     MAPI is timing out to this remote Exchange server.  Extended pings
>>     show an average of 40 - 50 ms response times.  According to the
>>     design guide, MAPI requires less than 10 ms response times.  Bottom
>>     line is TAC's recommendation is a Unity server next to any Exchange
>>     server that homes user's mailboxes.  I see that in the design guide
>>     and can appreciate that, but this is an expensive undertaking for a
>>     site that only has 20 users on that remote Exchange server.
>>      
>>     So my question is does anyone have any alternate suggestions, or
>>     working scenario of this setup?  What are my options?
>>      
>>     1.  Unity UM server at remote location with networking to HQ Unity.
>>     2.  Move remote Exchange server to HQ and force users to access
>>     Exchange over WAN.
>>     3.  Move remote user's mailboxes to HQ Exchange server.
>>     4.  Any others?
>>      
>>     Any advice or suggestions would be greatly appreciated.
>>      
>>     Karl Whitson
>>     CMB Technologies
>>     DID:  508.422.8413
>>     Cell:  603.930.4189
>>
>>     _______________________________________________
>>     cisco-voip mailing list
>>     cisco-voip at puck.nether.net <mailto:cisco-voip at puck.nether.net>
>>     https://puck.nether.net/mailman/listinfo/cisco-voip
>>
>>
>>
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> cisco-voip mailing list
>> cisco-voip at puck.nether.net
>> https://puck.nether.net/mailman/listinfo/cisco-voip
> 
> _______________________________________________
> cisco-voip mailing list
> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip