[cisco-voip] SRST (in 2821 and 3825) vs. CMM vs. AWG and somesurvivability design Qs
Voll, Scott
Scott.Voll at wesd.org
Wed Apr 12 17:47:14 EDT 2006
Stefan--
What is your Business?
How are the dual 2621 connected back?
What kind of Call load do you have?
Are you centralizing PSTN connectivity?
How often do your remote sites go down?
If you are looking for 100% survivability you should get a router that
will support that many phones.
If you don't need 100% then you can setup the phones that do need
survivability via a device pool. IE. I have a remote site with a 3640
that supports 24 phones. I setup the receptionist and the admins to
connect to SRST where as the other employees would not have a phone
during an outage. But since I'm running MetroE I don't have a lot of
outages.
We personally have the CMM blade in our HQ and it works very well. Hope
that helps some.
Just my 2 Cents.
Scott
-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Netfortius
Sent: Wednesday, April 12, 2006 8:19 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] SRST (in 2821 and 3825) vs. CMM vs. AWG and
somesurvivability design Qs
Does anyone have a pointer to features comparison and/or - mostly -
personal
experience/opinions about differences between IP telephony capabilities,
as
far as survivability of remote sites, between the traditional SRST
available
for the integrated svcs routers, and CMMs (for 6500s), as well AWGs
(4000s -
wondering if the 4500s still accept them?!?). Here is the challenge I am
faced with: planning for VoIP, with all remotes being provided with dual
2821s (for redundancy), dual-connected to either two 650x or two 450x.
We are
having a very heated debate, in my group (mostly out of lack of complete
knowledge about VoIP/IPT Cisco products, for any of us), in regards to
which
way to go, knowing the followings:
- all remotes will have anywhere between 100-240 phones;
- our design consists in a cluster of CMs at the HQ;
- we have identified the need for some survivability (of course) for
when the
links between remotes and HQ is not available (no CM for the phones to
register with);
- my definition of survivability is: remote phones should still be able
to ALL
communicate with each other, and any one of them being able to go "out"
via
PSTN, in case of disaster (of course within the limitation of number of
POTS
lines we will be providing fr each site).
Considering all of the above, I would really like to avoid scrapping the
2821s, just because of their limited capability in support of phones
(48/ea,
compared to my requirements), but I am also very much inclined to
believe
that the best solution is a 3825/45 w/SRST. Some of the other guys are
of the
opinion that we would be better off putting CMM module(s) in the 65xx
(where
we have them), or AWGs in the 45xx (where we have those).
I would appreciate any comments to the above, or - as stated originally
- an
RTFM link to some product comparison.
TIA,
Stefan
_______________________________________________
cisco-voip mailing list
cisco-voip at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
More information about the cisco-voip
mailing list