asterisk users - Mar 2008 - Need some input for Quad T1 and channel banks.

I'm looking to install a system with 80 FXS analog phones.
At this time the only cost effective solution is using a 4 port T1 card and
addit 600 channel bank.
Has anyone tried this solution? any good documents beside
http://www.voip-info.org/wiki/index.php?page=Asterisk+hardware+channel+bank+check
as far as i know, addit 600 T1 interface is not PRI (please correct me if
i'm wrong) its CAS robbed bit, will that work with new Digium quad T1 like
TE410P ?( I prefer to use Digium if possible)
The system is connected to the Telco through SIP trunk so all we have in
terms of analog is local loop, Do we need to have echo cancel in this
scenario ?
Thanks!
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Al lists wrote:
> I'm looking to install a system with 80 FXS analog phones.
Each channel bank can handle 48 analog channels, 2 PRIs per box.

> as far as i know, addit 600 T1 interface is not PRI (please correct me 
> if i'm wrong) its CAS robbed bit, will that work with new Digium quad 
> T1 like TE410P ?( I prefer to use Digium if possible)
This is incorrect.  I've got ours setup at a PRI.  esf, b8zs.

> The system is connected to the Telco through SIP trunk so all we have 
> in terms of analog is local loop, Do we need to have echo cancel in 
> this scenario ?
>
I'd say anything with analog will need EC.  If you can afford it on a 
quad card, I would.

Doug


-- 
Ben Franklin quote:

"Those who would give up Essential Liberty to purchase a little Temporary
Safety, deserve neither Liberty nor Safety."

On Mon, Mar 31, 2008 at 6:01 PM, Al lists <asteriskal at gmail.com>
wrote:
> I'm looking to install a system with 80 FXS analog phones.
> At this time the only cost effective solution is using a 4 port T1 card and
> addit 600 channel bank.
> Has anyone tried this solution? any good documents beside
>
http://www.voip-info.org/wiki/index.php?page=Asterisk+hardware+channel+bank+check
>  as far as i know, addit 600 T1 interface is not PRI (please correct me if
> i'm wrong) its CAS robbed bit, will that work with new Digium quad T1
like
> TE410P ?( I prefer to use Digium if possible)
> The system is connected to the Telco through SIP trunk so all we have in
> terms of analog is local loop, Do we need to have echo cancel in this
> scenario ?
>  Thanks!
>
I am not sure of your budget but I would go with a SIP to FXS gateway
such as the Quintum Tenor AX.  If you consider the amount you would be
paying for the T1 card and the Adits, it may not be that big of a
difference and certainly more simple.

Disclaimer, I have not done a price comparison or done the channel
bank solution on that scale (only 24 ports for me) but the SIP-FXS is
so much better in my opinion.

Thanks,
Steve Totaro

Here I will say it.... http://xorcom.com



On Mon, Mar 31, 2008 at 6:01 PM, Al lists <asteriskal at gmail.com>
wrote:
> I'm looking to install a system with 80 FXS analog phones.
> At this time the only cost effective solution is using a 4 port T1 card and
> addit 600 channel bank.
> Has anyone tried this solution? any good documents beside
>
http://www.voip-info.org/wiki/index.php?page=Asterisk+hardware+channel+bank+check
>  as far as i know, addit 600 T1 interface is not PRI (please correct me if
> i'm wrong) its CAS robbed bit, will that work with new Digium quad T1
like
> TE410P ?( I prefer to use Digium if possible)
> The system is connected to the Telco through SIP trunk so all we have in
> terms of analog is local loop, Do we need to have echo cancel in this
> scenario ?
>  Thanks!
>
>
>
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