[cisco-voip] pros, cons, and recommendations

[Ed Leatherman]

Assuming the CMMs are going into existing core 6500's, would that put more
dependancy on network upgrade schedules etc? For instance if you need to
reboot your sup card in the 6500 for something unrelated to voice, wouldnt
it take down your gateways as well. On the other hand, it would probably be
easier to manage if its just another part of a core box.

If all you will ever need is 4 T1's it might be better to get the 3845's
with redundant power supplies - i have no idea how the prices break down.

For the record I like the 6608's too :)

I would get the 7835's if you can afford it for the hotswappable parts. I
think the 7825's now have SATA RAID 1.


On 5/11/06, Voll, Scott <Scott.Voll at wesd.org> wrote:
>
>  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. <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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>
>


-- 
Ed Leatherman
IP Telephony Coordinator
West Virginia University
Telecommunications and Network Operations
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