Re: [asterisk-users] High Volume Call Center SIP versus IAX2
Just my opinion - Call Centers should be SIP trunked because IAX is more prone to poor sound quality. IN MY SHOP (shouting to make the point that I'm not speaking for all Asterisk installations), the IAX quality is at best 40-50% of a SIP connection. _ From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Robert Grignon Sent: Tuesday, October 20, 2009 3:41 PM To: asterisk-users@lists.digium.com Subject: [asterisk-users] High Volume Call Center SIP versus IAX2 I wont say we are extremely high volume (40 concurrent calls) but I get occasional complaints about quality. Setup (at same location): Asterisk 1.4.26.2 FrontEnd Asterisk 1.4.26.2 Gateway with Sangoma A108D card with 2 PRI and LDT1 Connected via IAX2 trunking on its own VLAN Is IAX2 the way to go or would SIP trunking be better. I know its a pretty vague question but I am just trying to make sure I am approaching the setup correctly. Thanks ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] High Volume Call Center SIP versus IAX2
snip the IAX quality is at best 40-50% of a SIP connection. /snip How is this calculated? Thanks Dave From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Danny Nicholas Sent: Tuesday, October 20, 2009 4:46 PM To: 'Asterisk Users Mailing List - Non-Commercial Discussion' Subject: Re: [asterisk-users] High Volume Call Center SIP versus IAX2 Just my opinion - Call Centers should be SIP trunked because IAX is more prone to poor sound quality. IN MY SHOP (shouting to make the point that I'm not speaking for all Asterisk installations), the IAX quality is at best 40-50% of a SIP connection. From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Robert Grignon Sent: Tuesday, October 20, 2009 3:41 PM To: asterisk-users@lists.digium.com Subject: [asterisk-users] High Volume Call Center SIP versus IAX2 I wont say we are extremely high volume (40 concurrent calls) but I get occasional complaints about quality. Setup (at same location): Asterisk 1.4.26.2 FrontEnd Asterisk 1.4.26.2 Gateway with Sangoma A108D card with 2 PRI and LDT1 Connected via IAX2 trunking on its own VLAN Is IAX2 the way to go or would SIP trunking be better. I know its a pretty vague question but I am just trying to make sure I am approaching the setup correctly. Thanks ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] High Volume Call Center SIP versus IAX2
On 21/10/09 9:52 AM, David Gibbons wrote: snip the IAX quality is at best 40-50% of a SIP connection. /snip How is this calculated? :) It's crap! Assuming no packet loss, alaw is alaw. If you add to that the fact you can reduce bandwidth with IAX trunking, you may even get better sound quality with IAX (less packet loss because more bandwidth available). -- Cheers, Matt Riddell Director ___ http://www.venturevoip.com/news.php (Daily Asterisk News) http://www.venturevoip.com/st.php (SmoothTorque Predictive Dialer) http://www.venturevoip.com/c3.php (ConduIT3 PABX Systems) ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] High Volume Call Center SIP versus IAX2
I don't have a good answer to that except how it sounds - SIP is a good LP, IAX2 is a poorly copied MP3 file. _ From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of David Gibbons Sent: Tuesday, October 20, 2009 3:53 PM To: 'Asterisk Users Mailing List - Non-Commercial Discussion' Subject: Re: [asterisk-users] High Volume Call Center SIP versus IAX2 snip the IAX quality is at best 40-50% of a SIP connection. /snip How is this calculated? Thanks Dave From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Danny Nicholas Sent: Tuesday, October 20, 2009 4:46 PM To: 'Asterisk Users Mailing List - Non-Commercial Discussion' Subject: Re: [asterisk-users] High Volume Call Center SIP versus IAX2 Just my opinion - Call Centers should be SIP trunked because IAX is more prone to poor sound quality. IN MY SHOP (shouting to make the point that I'm not speaking for all Asterisk installations), the IAX quality is at best 40-50% of a SIP connection. _ From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Robert Grignon Sent: Tuesday, October 20, 2009 3:41 PM To: asterisk-users@lists.digium.com Subject: [asterisk-users] High Volume Call Center SIP versus IAX2 I wont say we are extremely high volume (40 concurrent calls) but I get occasional complaints about quality. Setup (at same location): Asterisk 1.4.26.2 FrontEnd Asterisk 1.4.26.2 Gateway with Sangoma A108D card with 2 PRI and LDT1 Connected via IAX2 trunking on its own VLAN Is IAX2 the way to go or would SIP trunking be better. I know its a pretty vague question but I am just trying to make sure I am approaching the setup correctly. Thanks ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] High Volume Call Center SIP versus IAX2
On Tue, 20 Oct 2009, Robert Grignon wrote: I wont say we are extremely high volume (40 concurrent calls) but I get occasional complaints about quality. Is IAX2 the way to go or would SIP trunking be better. IAX gets my vote -- especially within the same shop. One client maxes out at around 100 concurrent calls and they are extremely picky. No complaints about audio quality. I have another client that maxes out at around 300 concurrent calls. They complain a bit about audio quality during their peaks, but they don't want to spend any money to see if IAX is the problem. IAX is efficient and easy to configure. -- Thanks in advance, - Steve Edwards sedwa...@sedwards.com Voice: +1-760-468-3867 PST Newline Fax: +1-760-731-3000 ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] High Volume Call Center SIP versus IAX2
Easy to try, switch to sip for a day, see if the problems go away. I think its worth to move to sip if you dont care about the bandwidth and your router(s) can handle the extra packets /s Zoa Robert Grignon wrote: I wont say we are extremely high volume (40 concurrent calls) but I get occasional complaints about quality. Setup (at same location): Asterisk 1.4.26.2 FrontEnd Asterisk 1.4.26.2 Gateway with Sangoma A108D card with 2 PRI and LDT1 Connected via IAX2 trunking on its own VLAN Is IAX2 the way to go or would SIP trunking be better. I know its a pretty vague question but I am just trying to make sure I am approaching the setup correctly. Thanks ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- 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 -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
