[cisco-voip] Centralized CM deployments.

[Youkhanna, Ed]

I'd like to get some opinions and examples of various designs some of
you have come across in your experiences.
We are getting ready to re-do our IPT environment following a more
"Centralized" approach. 

We are designing it with the following things in mind;

All offices under 400 users will get there call processing across the
WAN from a regional IPT cluster.
There will be 8 IPT clusters spread across the US. Those offices are
true campuses with user counts exceeding 1000 in some case.

Here is a quick breakdown of the hardware matrix for the 400 and below
user count;



Device	

Description	
Target Software Revision	
Required No of Devices	
			
50<
USERS	
51 - 150 USERS	
151-400
USERS	
2851	PSTN Voice Gateway
(Supports 96 SRST phones)	12.3.(11)T5 SRST GB	1
	2	X	
3825	PSTN Voice Gateway
(Supports 336 SRST phones)	12.3.(11)T5 SRST GB	X	X
2	
VWIC-2MFT-T1	Voice T1 Ports***	X	1	2	2	
PVDM2-64		X	2	2	2	
IP Phones 79x0	IP Phones end stations	7.1(2)				
VG248	Analog ports**	1.3(1)	X	X	1	
VG224	Analog Ports**	12.3(11)T5 GB	X	1	X	
VWIC-4FXO	CO trunks**	X	1	2	2	
VWIC-4FXS	Analog ports**	X	1	X	X	


Thoughts?

Eddy Youkhanna
MM GNS - Global Network Architecture & Engineering
Marsh Inc. | Mercer Inc.
Deerfield, IL, USA
   
phone +1 847 317 7450
fax +1 847 317 7412
mailto:Ed.Youkhanna at Mercer.com
www.Mercer.com