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

[Karl Whitson]

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> 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

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