VoIP Mailing List Archives

[mattdarnell at gmail.com]

Any know what Digium hasn't released the DS3 card?

It was supposed to be out a while ago.

-Matt

[tilghman at mail.jeffa...]

On Sunday 06 April 2008 02:01:49 Matt Darnell wrote:

[stotaro at totarotechn...]

On Sun, Apr 6, 2008 at 3:47 AM, Tilghman Lesher
<tilghman at mail.jeffandtilghman.com> wrote:

[stotaro at totarotechn...]

On 4/6/08, Tilghman Lesher <tilghman at mail.jeffandtilghman.com> wrote:

[bwentdg at pipeline.com]

ok - but has a new release date be announced ?
or
Has Digium officially dropped the product ?

Steve Totaro wrote:

[jra at baylink.com]

On Sun, Apr 06, 2008 at 05:37:03AM -0400, Steve Totaro wrote:

[tilghman at mail.jeffa...]

On Sunday 06 April 2008 04:48:19 Al Baker wrote:

[jra at baylink.com]

On Sun, Apr 06, 2008 at 09:44:30AM -0500, Tilghman Lesher wrote:

[viciastdump at gmail.com]

Another reason I am sure that Digium has not released a DS3 TDM card is the
fact that asterisk currently cannot handle that many channels. I am speaking
from experience on this. We have build before a predictive dialer with 16
PRIs. In order to do this and not have audio quality issues we had to use an
8 core Intel Xeon server with 16 gigs of ram, a 6 drive RAID 10, and two
octal echo canceling Sangoma cards. This also required numerous OS tweaks
and dial plan optimizations. The amount of time spend on this was not worth
the final product.

This is not to say that Asterisk will not be able to support this in the
future. In the 1.6 tree, they have change a number of core data structures
and the type of locking used around them which should allow far more
channels to pass through Asterisk with much lower load. I would not even
attempt this though till somewhere around the 1.6.5 release so that the vast
majority of the bugs can be worked out.

In the mean time, if someone really needs to handle that many channels I
would suggest purchasing a DS3 to T1 mux and pass the T1s onto mutliple
Asterisk servers setup in a cluster. In the end you will end up spending far
less money and time setting the system up. I also saw recently at a trade
show a DS3 to SIP converter which might also lower the cost as you would not
need T1 cards. The only issue is that they are a some what new technology
where as DS3 to T1 muxes have been around for some years now and can be
found on ebay for around 700 dollars.

Michael Cargile
Director of Consulting
The Vicidial Group
www.vicidial.com
On Sun, Apr 6, 2008 at 9:55 AM, Jay R. Ashworth <jra at baylink.com> wrote:

[stotaro at totarotechn...]

I cannot recommend the Adtran MX2800 M13, it has redundant everything
and is very easy to setup and not very expensive either.

Thanks,
Steve Totaro

On Sun, Apr 6, 2008 at 11:04 AM, Michael Cargile <viciastdump at gmail.com> wrote:

[stotaro at totarotechn...]

On Sun, Apr 6, 2008 at 10:44 AM, Tilghman Lesher
<tilghman at mail.jeffandtilghman.com> wrote:

[stotaro at totarotechn...]

Should have read, "I cannot recommend the Atran MX2800 M13 *enough*"

Two controller cards, two power supplies, battery backup, this is a
nice little box.

It will probably be the most solid piece of equipment in your data center.

Thanks,
Steve Tototaro

On Sun, Apr 6, 2008 at 11:12 AM, Steve Totaro
<stotaro at totarotechnologies.com> wrote:

[jra at baylink.com]

On Sun, Apr 06, 2008 at 11:12:33AM -0400, Steve Totaro wrote:

[tilghman at mail.jeffa...]

On Sunday 06 April 2008 10:13:43 Steve Totaro wrote:

[stotaro at totarotechn...]

On Sun, Apr 6, 2008 at 11:58 AM, Tilghman Lesher
<tilghman at mail.jeffandtilghman.com> wrote: