[asterisk-users] High Volume Call Center SIP versus IAX2

[Danny Nicholas]

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.

 

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From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at 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-bounces at lists.digium.com
[mailto:asterisk-users-bounces at 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.

 

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From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Robert Grignon
Sent: Tuesday, October 20, 2009 3:41 PM
To: asterisk-users at 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

 

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