[cisco-voip] a stack of VG224s vs C3945-112FXS/K9

Sat Jan 22 23:09:23 EST 2011

I can only imagine how the 3945 bundle will be to configure, with all the goofy port numbers between main board and nm modules... thanks, but no thanks cisco. I'll take the vg224. :).

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

317.569.4255 Single Number Reach
317.569.4201 Fax
dennis.heim at cdw.com<mailto:dennis.heim at cdw.com>
cdw.com/content/solutions/unified-communications/<http://www.cdw.com/content/solutions/unified-communications/>

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Nick Matthews
Sent: Friday, January 21, 2011 10:54 AM
To: Lelio Fulgenzi
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] a stack of VG224s vs C3945-112FXS/K9

I don't know of any plans to sunset the VG224.  The only difference between the VG224 and a ISR G2 is the PVDM3 DSPs.  A 3845 and VG224 are functionally equivalent.

Differences between the PVDM2 and PVDM3's - video support.  You'll see these be video transcoders/MCU type resources some time in the future.  Possibly some enhanced codec support - namely the dreaded G.729-G.729 capability, and maybe some new codes.  Price - they are cheaper as you scale towards some of the higher densities (PVDM3-256 and 128).

Feature wise today, between the VG224 and 3945, I would say is almost nothing.  At least in terms of using it as a high density analog solution.

-nick
On Thu, Jan 20, 2011 at 10:30 AM, Lelio Fulgenzi <lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>> wrote:
I hear ya about the SG3 support. These are strictly analog lines for phones, not faxes, so I'm not too worried. However, from what I recall from discussions on this list is that the VG224s have updated DSPs and that it's in the IOS that gives the SG3 support. Definitely something to think about for a FAX deployment.

Not quite sure the 3945 bundle is a replacement for a VG224 though. It's 112 ports vs 24. However, if they come out with a 2901 bundle with 16 ports, then yes, I would think the VG224 days are numbered. With the new vic3-4fxs ports, this is a possibility. ;)

---
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Cooking with unix is easy. You just sed it and forget it.
                              - LFJ (with apologies to Mr. Popeil)

________________________________
From: "Scott Voll" <svoll.voip at gmail.com<mailto:svoll.voip at gmail.com>>
To: "Lelio Fulgenzi" <lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>>
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Sent: Thursday, January 20, 2011 10:04:03 AM
Subject: Re: [cisco-voip] a stack of VG224s vs C3945-112FXS/K9

Are there any other features eg. Super G3 Fax that the 39xx supports that the VG's don't.

ISR2's are NOT going anywhere any time soon.  I would be interested to know if Cisco came out with this package, how long it will be before the VG's get EoS/EoL as that seems to be Cisco's way.  Bring out a replacement, then EoX the old stuff.  Might be worth talking to the AM/SE about cisco's plans.  I would hate to put out a bunch of $$$ and then have it EoX a month later....... Been there, Done that.

Just my 2 cents.  (and we all know how much that's worth in today's economy ;-)

Scott
On Thu, Jan 20, 2011 at 6:38 AM, Lelio Fulgenzi <lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>> wrote:
So I'm looking at migrating a large number of analog lines to our Cisco solution. Right now, the most economical approach is a stack of VG224s, however, Cisco has a (new) bundle, the C3945-112FXS/K9. The per port cost is still quite a bit more (almost double) so I'm finding it difficult to justify even to myself, let alone mgmt. SmartNet costs are about equal, with the 3945 bundle just a bit cheaper.

I understand that I would be managing 4.5 VG224s to every 3945 bundle, but really, once these things go in, they're really just left alone.

Some other things I've been thinking:

 *   Pro: 3945 has a slightly denser port count per RU (112/4RU vs 96/4RU)
 *   Pro: 3945 would use less uplink ports (2 per 112 vs 8 per 96)
 *   Con: H/W issues would bring down 112 ports
 *   Con: shelving a spare would be much more expensive
 *   Con: configuration would be a bit more complex, different port types
 *   Con: not known if SRST registration would behave the same way to a core 3945
What do others think? What would you do?

Lelio

---
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Cooking with unix is easy. You just sed it and forget it.
                              - LFJ (with apologies to Mr. Popeil)

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