+1 - if reliability/quality are important (especially if you're looking for 24 (well, 23) channels) - PRI is the way to go. We have some call limit features in place on our Patton PRI gateways - if we have over xx channels in use, we can force outbound calls to be sent via a sip trunk (registered on the PRI gateway) to keep a few channels dedicated to inbound calling (this should only be an issue if you're worried about ever having more than 23 calls simultaneous calls the PRI) - basically, the sip trunks becomes your overflow for any outbound calls.
From: sipx-users-***@list.sipfoundry.org [mailto:sipx-users-***@list.sipfoundry.org] On Behalf Of Tony Graziano
Sent: Tuesday, July 03, 2012 12:57 PM
To: Discussion list for users of sipXecs software
Subject: Re: [sipx-users] SIP Trunking Gateway
I'll ditto the price preference on that call volume. We would prefer not to deal with trunk or internet quality if we don't have to.
On Jul 3, 2012 12:27 PM, "Matt White" <***@thesummit-grp.com<mailto:***@thesummit-grp.com>> wrote:
Sipxbridge is more than capable of handling 24 simultaneous calls through a siptrunk if the hardware has decent specs ie...at least dual core and 8GB of ram.
We use Appia for all deployments. The load you noted here will be fine. they offer trunks with or without T1's.
Your biggest question is what to use for your internet connection. If they will have 24 simultaneous calls your looking at about 2048 KB if using G.711U (86KB with payload plus overhead). Which means you will need to move to G.729 to fit your max call bandwidth inside a T1.
-M
I am recommending a SipX to a customer. They are going to be
converting from PRI to SIP trunking. They want to have 24
trunks available for calls. I am assuming that the internal
SipX bridge is not going to be sufficient for the amount of
calls that they are looking to handle. I am looking for
recommendations from the forum for the best way to handle
all 24 SIP trunks including best hardware and SIP providers
for this deployment(I have used VoIP.ms and DIDLogic in the
past). Any help is greatly appreciated.
--
Tommy Laino
Dome Technologies
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