[cisco-voip] FXS/DSP limits on 2800 (2811)

[Lelio Fulgenzi]

I usually do two things, first, I run the DSP calculator to see if everything fits. I can't find the NM-HDA-4FXS on the drop down, that's my first concern. 

Second, I look at the "compare models" data sheet for the device and see what it says for the max number of FXS ports. Unfortunately, I can't find one for the 2800 series. The only thing I could find is: 

http://www.cisco.com/en/US/prod/collateral/routers/ps5855/prod_brochure0900aecd8019dc1f.pdf 

which doesn't have FXO counts for individual models. 

Not sure if that helps or not. 



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


----- Original Message -----
From: "chris" <tknchris at gmail.com> 
To: cisco-voip at puck.nether.net 
Sent: Friday, December 21, 2012 10:24:36 AM 
Subject: [cisco-voip] FXS/DSP limits on 2800 (2811) 

Hi, 

I am looking at possibility of using some spare 2811's as voice 
gateways to replace some aging 2600's and a vg224. 

>From reading the compability pages of the modules, I was trying to 
figure out if I could realistically run a 2811 with: 

1x NM-HDA-4FXS w/ 2 EM-HDA-8FXS 
4x VIC-4FXS/DID 

Can this platform drive 36 FXS? If not how many can I realistically 
do? Will it be capable of handling activity on all 36 simultaneously? 
I do not plan to run any other features/services other than connecting 
the analogue devices to SIP 

Any thoughts/advice/recommendations would be appreciated. If you think 
this is not realistic and have any suggestions that would be great. My 
main attraction to this platform is that I have a few on hand, they 
are fairly cheap secondhand and they can use some of the legacy vic 
cards which are also available at pretty low cost. 

Thanks 
chris 
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