<br><br><div class="gmail_quote">On Thu, Aug 13, 2009 at 6:25 AM, Shashi Dookhee <span dir="ltr"><<a href="mailto:sdookhee@fortify.com">sdookhee@fortify.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi all,<br>
<br>
I was looking to build a SIP-to-PRI gateway using Asterisk (as in my other post), but there is also an alternative of using a Cisco router with something like an NM-HDV module with a T1 VIC module and DSP channel banks.<br>
<br>
The question is, would it be more reliable to offload all dahdi/zaptel/libpri type stuff to a dedicated gateway device (Asterisk or Cisco) and have the Asterisk PBX only process SIP/IAX? What prompted all this was terrible call quality/dropped calls over our PRI (which currently has a Wildcard TE207P PCI card) and after two weeks of searching I think I've finally found the issue today (Serial ATA vs Auto mode in the BIOS, would you believe which leads us to believe that offloading duties would be very beneficial performance-wise!).<br>
<br>
I can think of the gateway allowing us to have multiple PBX's to serve our calls more easily, maybe making it easier to failover PRI's too, etc... Although we do have an ADTRAN Atlas that allows us to split call volume by DIDs if we wanted to (right now we only have one Asterisk PBX, one electronic FAX server and a couple of standalone FXO devices - all sharing our PRI by the ADTRAN)...<br>
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Any comments appreciated.<br>
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Thanks!<br>
<br>
S.<br>
</blockquote><div> </div></div>I try to dedicate a box (sometimes HA heartbeat or just a decent server like the HP DL360 with dual power supplies and RAID) to a certain task.<br><br>The litmus test is when that task is mission critical and can logically be drawn out on a whiteboard. <br>
<br>PRI<->SIP is pretty intensive and obviously mission critical and at least to me can sit on it's own little square on the whiteboard.<br><br>Budget wise, if possible, I would go with two HP DL360s with dual power supplies, RAID and a Redfone device or at the least two Sangoma cards, one for cold spare (unless Digium now has a lifetime warranty that I am unaware of).<br>
<br>-- <br>Thanks,<br>Steve Totaro <br>+18887771888 (Toll Free)<br>+12409381212 (Cell)<br>+12024369784 (Skype)<br>