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

[Robert Grignon]

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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