[cisco-voip] upgrade 2000 phones at 40 branch through the WAN

[Dennis Heim]

Personally, a day or two prior to the upgrade, I would change the phone loads on the 4.x cluster to match the load in 7.x... this way you have one less thing to worry about.

Dennis Heim
Network Voice Engineer
CDW  Advanced Technology Services
11711 N. Meridian Street, Suite 225
Carmel, IN  46032

317.569.4255 Office
317.569.4201 Fax
317.694.6070 Cell
dennis.heim at cdw.com<mailto:dennis.heim at cdw.com>
www.berbee.com<http://www.berbee.com/>

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of wael ahmed el mezain
Sent: Monday, July 20, 2009 2:07 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] upgrade 2000 phones at 40 branch through the WAN

hello,

I have client has ccm 4.1 (one Pub - 3 Subs) with about 2000 phones at +40 branch, and going to upgrade to ccm 7.x

Most of the remote sites has 1 MB or less (could be 512 or 384) WAN link to the HQ.

Is there any problem if we are going to do the phones upgrade for all the sites at the same time (after the CCMs upgrades using the DMA tool)?

I used to get the best solution from this group; anyone has any suggestion/idea for this case to decrease the downtime as much as we can with min risk?

Thanks,
Wael Ahmed
CCIE Voice # 24778

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