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

[Mike King]

This is why I love mailing lists.

It's been 5 years since I've touched a channel-bank.  I've forgotten
completely that was an option.  I might have access to a ADIT 600 with 24
channels that I can borrow for a few weeks.

We are going to switch to a PRI, we're just concerned about the lead time.
 (Keep in mind this is a break/fix change)

Mike

On Wed, Dec 30, 2009 at 11:17 AM, Doug McIntyre <merlyn at geeks.org> wrote:

>
> Might be easier to setup a channel-bank with a bunch of FXO ports to
> terminate the analog lines into a T1 and feed the T1 back to the 2921 for
> the gateway function. Something like an ADIT 600 or the appropriate Adtran
> TSU,
> and the stock VWIC T1 card on the 2921 rather than mess with all those
> cards.
>
> And at the prices the LEC's charge around here for 1FBs vs. PRIs,
> switching to a PRI directly would probably pay the NRC and CPE charges
> in less than 6 months when you are talking 23 1FBs.
>
>
>
> On Wed, Dec 30, 2009 at 05:35:23PM +0500, Syed Khalid Ali 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
> > >
> > > _______________________________________________
> > > cisco-voip mailing list
> > > cisco-voip at puck.nether.net
> > > https://puck.nether.net/mailman/listinfo/cisco-voip
> > >
>
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>
>
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