Re: [asterisk-users] Max amount of concurrent calls on and iax trunk
If you're using IAX, upgrade to latest 1.4, as there have been a number of security releases you should apply. Or at least read up and make sure the 1.2 version is up-to-date. On Wed, Aug 6, 2008 at 1:40 PM, Rosli Sukri [EMAIL PROTECTED] wrote: hi, wanted to ask if anybody has experienced setting up two asterisk 1.2 boxes connected via iax trunk. have u guys ever stress tested the trunks i.e how many concurrent calls can a trunk handle and whether codec has any effect on it. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Max amount of concurrent calls on and iax trunk
I agree bandwidth is the limit, however the reason to use IAX is it is saving bandwidth. I am runging 2 Trixbox CE with IAX over a 2 Mbit line. I have never had any isues with the IAX trunk. I wish that I could get son good IAX phones to the office, tan would we skip on Trixbox and run the phones directly over a VPN Chanel. SIP over VPN are giving more hassle then IAX sound wise. On Thu, Aug 7, 2008 at 1:45 AM, Chris Brentano [EMAIL PROTECTED] wrote: I have two Asterisk 1.4 boxes connected via IAX over a VPN tunnel on a 10Mbit link. We never did any stress testing as it's a temporary arrangement, but we've never had any call quality issues or run up against concurrent ca, holl limitations. I'm mostly routing internal extensions over the trunk, and in the case of two floating users I have their extensions at each office ring when their DID is called. One server is an older Pentium 4 1.7 GHz with 1GB Ram, and the other is a Dual Xeon 2.33 GHz with 4GB Ram. As for codec, I'm disallowing all except ulaw and gsm, with ulaw the priority codec for hardphones (Polycom) and gsm the priority for softphones (X-Lite, Zoiper). I would expect the limitation you're going to run up against is not Asterisk, but the bandwidth between your two systems. On 6 Aug, 2008, at 10:40 AM, Rosli Sukri wrote: hi, wanted to ask if anybody has experienced setting up two asterisk 1.2 boxes connected via iax trunk. have u guys ever stress tested the trunks i.e how many concurrent calls can a trunk handle and whether codec has any effect on it. ATT1.c ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- Mattias Andersson Storskiftesvägen 6 145 60 Norsborg m. +46-70-799 44 41 h. +46-8-641 38 97 Email: [EMAIL PROTECTED] ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Max amount of concurrent calls on and iax trunk
Mattias Andersson wrote: I agree bandwidth is the limit, however the reason to use IAX is it is saving bandwidth. I am runging 2 Trixbox CE with IAX over a 2 Mbit line. I have never had any isues with the IAX trunk. I wish that I could get son good IAX phones to the office, tan would we skip on Trixbox and run the phones directly over a VPN Chanel. SIP over VPN are giving more hassle then IAX sound wise. In this setup, there can be a bandwidth saving with keeping both the servers so that you can use trunking=yes in the trunk definition in iax.conf. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Max amount of concurrent calls on and iax trunk
On Thu, 7 Aug 2008, Mattias Andersson wrote: I agree bandwidth is the limit, however the reason to use IAX is it is saving bandwidth. I am runging 2 Trixbox CE with IAX over a 2 Mbit line. I have never had any isues with the IAX trunk. I wish that I could get son good IAX phones to the office, tan would we skip on Trixbox and run the phones directly over a VPN Chanel. SIP over VPN are giving more hassle then IAX sound wise. So As I Understand It... The bandwidth saving on using IAX is using it in a trunk mode - using it on separate phones will use almost as much as SIP phones will. In my (rough calculations!) world, a SIP call uses 80Kb/sec b/w (each way, but we'll quietly ignore thant for now) A single IAX call uses almost the same, (78 according to a quick check on iftop) but in an IAX trunk, each additional call is only adding on about 65Kb/sec - whereas in a SIP world, each additional call is adding on another 80Kb/sec... Or you can have approx. 15 to 20% more IAX calls than SIP calls over the same Internet path, if they're inside an IAX trunk. Lets see if that works: On a 2Mb line: SIP is: 2048/80 = 25 concurrent SIP calls. IAX is: ((2048-80)/65)+1 = 31 concurrent IAX calls. (And 31 calls is 31*50 = 1550 packets a seconds each way, so make sure the router can handle that!) Personally, I tend to suggest to my customers that if they have more than 4 or 5 extensions in one location that they're better off with a micro PBX to trunk the calls out - especially if they're making a lots of calls, and a few internal calls (as on NAT it'll bounce the call out in again )-: This is based on typical UK ADSL line speeds though (up to 420Kb/sec , outgoing speeds on normal lines, 830Kbps on 'business' lines) Although typically what happens is that they want to keep their existing branch-office POTS lines and integrate them into the system, so they get a mini PBX rather than a micro one! However I did see some more IAX phones recently when looking: Atcom - http://www.voipon.co.uk/voip-ip-telephones-atcom-iax-ip-telephone-c-1_61.html (thats a UK site, obvously) It also irritates me when I see the likes of Snom (and Doro) phones which are Linux based not supporting IAX ... Gordon ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[asterisk-users] Max amount of concurrent calls on and iax trunk
hi, wanted to ask if anybody has experienced setting up two asterisk 1.2 boxes connected via iax trunk. have u guys ever stress tested the trunks i.e how many concurrent calls can a trunk handle and whether codec has any effect on it. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Max amount of concurrent calls on and iax trunk
Rosli Sukri wrote: hi, wanted to ask if anybody has experienced setting up two asterisk 1.2 boxes connected via iax trunk. have u guys ever stress tested the trunks i.e how many concurrent calls can a trunk handle and whether codec has any effect on it. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users What are the hardware specs of the boxes, and what is the speed of the connection between them? -- Robin Rodriguez VoIP/Telecom Engineer Atlantic.net 1-800-211-9496 ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Max amount of concurrent calls on and iax trunk
I have two Asterisk 1.4 boxes connected via IAX over a VPN tunnel on a 10Mbit link. We never did any stress testing as it's a temporary arrangement, but we've never had any call quality issues or run up against concurrent call limitations. I'm mostly routing internal extensions over the trunk, and in the case of two floating users I have their extensions at each office ring when their DID is called. One server is an older Pentium 4 1.7 GHz with 1GB Ram, and the other is a Dual Xeon 2.33 GHz with 4GB Ram. As for codec, I'm disallowing all except ulaw and gsm, with ulaw the priority codec for hardphones (Polycom) and gsm the priority for softphones (X-Lite, Zoiper). I would expect the limitation you're going to run up against is not Asterisk, but the bandwidth between your two systems. On 6 Aug, 2008, at 10:40 AM, Rosli Sukri wrote: hi, wanted to ask if anybody has experienced setting up two asterisk 1.2 boxes connected via iax trunk. have u guys ever stress tested the trunks i.e how many concurrent calls can a trunk handle and whether codec has any effect on it. ATT1.c ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
