I try to off-load specific tasks like PRI-to-SIP to dedicated hardware for the task. It is also easier to have centralized call processing and easy to configure/manage devices in our remote locations. I have colleagues that use Digium PRI cards just fine. Just depends on your budget and philosophy.<br>
<br>We currently use the remains of a CallManager system which includes two PRIs into a Cisco 2811 voice bundle. While the Cisco does work, I wouldn't recommend it. The SIP implementation doesn't play well with others, and even some of the configuration commands that you can use don't take effect...<br>
<br>While I haven't used AudioCodes for PRI termination (yet) I have been pleased with the analog gateways they make. The cost on a AudioCodes Mediant 1000 with two PRI ports or two Mediant 600's would probably set you back less than a Cisco 2801/2811 voice bundle + VWIC-2MFT-T1 and be easier to configure.<br>
<br>I will say that when I need to replace my other 2800s I will probably go with a AudioCodes M1000 (PRI and Analog capabilities), but I don't have any hands on experience with that device at this time.<br><br>-Jonathan<br>
<br><br><div class="gmail_quote">On Thu, Aug 13, 2009 at 4:26 AM, Steve Totaro <span dir="ltr"><<a href="mailto:stotaro@asteriskhelpdesk.com">stotaro@asteriskhelpdesk.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;">
<div class="im"><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" target="_blank">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>
<br>
Any comments appreciated.<br>
<br>
Thanks!<br>
<br>
S.<br>
</blockquote><div> </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>
<font color="#888888">
<br>-- <br>Thanks,<br>Steve Totaro <br>+18887771888 (Toll Free)<br>+12409381212 (Cell)<br>+12024369784 (Skype)<br>
</font><br>_______________________________________________<br>
-- Bandwidth and Colocation Provided by <a href="http://www.api-digital.com" target="_blank">http://www.api-digital.com</a> --<br>
<br>
AstriCon 2009 - October 13 - 15 Phoenix, Arizona<br>
Register Now: <a href="http://www.astricon.net" target="_blank">http://www.astricon.net</a><br>
<br>
asterisk-users mailing list<br>
To UNSUBSCRIBE or update options visit:<br>
<a href="http://lists.digium.com/mailman/listinfo/asterisk-users" target="_blank">http://lists.digium.com/mailman/listinfo/asterisk-users</a><br></blockquote></div><br>