[cisco-voip] pros, cons, and recommendations

[Voll, Scott]

Just my two cents:

 

Always go with a 7835 over a 7825.  unless the 7825 has RAID 1 mirroring
which the older 7825 didn't.  we use a 7835 as the pub and 7825 as the
sub. 

 

We have the CMM in our Cat65xx and I love it.  I have also used some
28xx series routers.  As far as easy there isn't much difference both
run IOS. MGCP is going to be the easiest but you might need H323 if you
are integrating with any old PBXs.  If you want the most scalable I
would use the CMM as you can put high port density on the CMM. 24 FXO, 6
T1, and Conferencing / transcoding resources and you can get up to 4 of
those cards in a single blade.  We use both the 6 port t1 and ACT cards.

 

The biggest consideration is always going to be how many $$$$.

 

Scott

 

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lelio Fulgenzi
Sent: Thursday, May 11, 2006 12:07 PM
To: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] pros, cons, and recommendations

 

I think the vendors should be able to provide you with reasons of going
with one over the other. Let them do the work is what I say. ;)

 

That being said, with respect to the servers, the Cisco site has plenty
of information on hardware content as well as the total number of phones
supported per server. It all depends on your comfort level with the
availability and serviceability of the servers. For example, the 7825
doesn't have dual/removable power supplies.

 

As for the gateways, you have to look at functionality here. MGCP vs
H323 (or at least that's what I hear ;) and configuration. We use the
old 6608s for T1 connectivity as well as conferencing and I love them.
But we lose out on some of the feature sets like VXML and some of the
fancy Tk/tcl things that people can do on routers. If you already have
the 6500s, I would say get the CMMs.

 

Lelio

 

 

 

------------------------------------------------------------------------
--------
Lelio Fulgenzi, B.A.
Network Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Sanity First : Number of days with fewer than
50 messages in my inbox at the end of the day:   buffer overrun

	----- Original Message ----- 

	From: Brown, Matthew A. <mailto:mbrown at highpoint.edu>  

	To: cisco-voip at puck.nether.net 

	Sent: Thursday, May 11, 2006 2:48 PM

	Subject: [cisco-voip] pros, cons, and recommendations

	 

	My organization is preparing to move from a traditional PBX to a
Cisco
	IPC system and has been given contradicting recommendations for
certain
	equipment by different potential vendors.  What are your pros,
cons, and
	recommendations for these pieces:
	
	Gateway between internal network and PSTN:
	2 Cat6500 Communications Media Modules (installed in separate
core
	6500s) w/ 6-port T1 adapter
	vs.
	2 3845 ISR voice bundles w/ 3 PVDM2-64 DSPs, 2 2-port T1 VWICs,
and 2
	4-port FXO VICs each 
	
	CallManager servers:
	MCS-7825 v. MCS-7835
	
	Our environment will have 675 phones at time of install with
projected
	growth of 250 phones in the next 5 years, and 4 T1s for PSTN
interaction
	(2 DID, 1 WAT, 1 other).  Important to our consideration are
redundancy,
	performance, ease of configuration and management, scalability,
and
	cost.
	
	TIA,
	
	Matthew Brown
	High Point University
	 
	
	
	
	
	Visit www.highpoint.edu ... At High Point University every
student receives an extraordinary education in a fun environment with
caring people.
	
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