[cisco-voip] Maximum POTS lines on a 2921 router

[lelio at uoguelph.ca]

FYI: The EM-HDA-6FXO requires the EVM-HD-8FXS/DID card to be installed.

https://www.cisco.com/en/US/prod/collateral/modules/ps3115/product_data_sheet0900aecd8016c1c6_ps5855_Products_Data_Sheet.html

The amphenol connector also requires the correct punchdowns. Because  
the HD card itself can have different modules, the punchdowns are  
different depending on what you install. The Cisco site refers to a  
Blackbox part number that takes care of this for you.

This link also says that the 2921 supports 28 FXO ports, so you should  
be good to go. I like to see the max number in print because I found  
out that just because you can fit X number of ports physically into  
the router, doesn't mean it will support all of them.

https://www.cisco.com/en/US/products/ps10537/prod_series_comparison.html

Lelio Fulgenzi, Senior Analyst
Computing & Communications
University of Guelph
519-824-4120 x56354

...sent from my iPod - please pardon my fat fingers ;)

[XKJ2000]

On 2009-12-30, at 7:37 AM, Syed Khalid Ali <syed.khalid.khursheed at gmail.com 
 > wrote:

> by the way I think EM-HDA-6FXO requires emphenol (i forgot the  
> spelling) cable
>
> On Wed, Dec 30, 2009 at 5:35 PM, Syed Khalid Ali <syed.khalid.khursheed at gmail.com 
> > wrote:
> For 23 Analog Line:
> 1)-  24 DSP channels
> 2)-  Does 2921 support analog voice termination to this capacity?  
> 2921 has 4xEHWIC slots and looking at the datasheet it seem to be  
> compatible with previous generation card. So there can be a total of  
> 16 FXOs ( 4 x VIC2-4FXO) + EM-HDA-6FXO, so total of: 16 + 6 = 22  
> ports.
>
> refer these for further details:
> ISR G2 modules support:
> http://www.cisco.com/en/US/prod/collateral/routers/ps10538/aag_c07_563807.pdf
> 2921 Datasheet:
> http://www.cisco.com/en/US/prod/collateral/routers/ps10537/data_sheet_c78_553896.html
>
> -- 
> Thanks,
> Syed Khalid Ali
>
>
> On Wed, Dec 30, 2009 at 3:15 AM, Mike King <me at mpking.com> wrote:
> So this just got tossed in my lap, and I'm still digging for  
> information.
>
> We have a site that basically had they're legacy phone system die  
> (It's not totally dead, but it ain't happy).  The plan is to do an  
> SRST with a new 2921 router and add them to our main site.
>
> The problem is coming down to the interface to the PSTN.  We were  
> originally told that the site has a T1.  Further investigation has  
> revealed the site infact has analog lines, it's unknown if they are  
> Groundstart/loopstart/POTS, etc.
>
> Question:
>
> Is it possible to get 23 analog lines into a single 2921 router?  If  
> so, what combination of cards/*WICS would make this happen.
> We're looking to get the site converted to a T1, but we're not sure  
> what the time line on that happening is.
>
> Mike
>
> _______________________________________________
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>
>
>
> -- 
> Thanks,
> Syed Khalid Ali
>
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