I have iTalk through my Telstraclear cable connection in christchurch.
Sometimes i get a problem where the inbound calls do not work, they just go straight to voicemail. This is pretty intermittant and generally it works fine.
I have rang Slingshot about this and they just basically blamed Telstraclear, but as far as i can tell my internet connection is extremely stable.
Would daily resetting of my connection help? Anyone else had any issues with this?