I'm considering going with one of these providers to make some important business calls to the US. I'll be using DTAC's 004 call extension or True's 006 for international.

Does anyone have experience with either of these? How has call quality been? FYI I'm in Bangkok.

Moved to correct forum.

I use the True 006, and can't recall any problems.

I use True's 006 and never have had a problem. At a baht per minute, it's a good deal (have no idea what DTAC charges).

Imo dtac have better calling quality like true 006

High voice compression true using all the time I call in Germany. The other side complain bad voice quality

My VoIP sounds better

dtac to Australia is brilliant and cheap, no idea on true though

looks like I need to add AIS to this discussion as well – if anyone has input on them for international calls, please share.

looks like I need to add AIS to this discussion as well – if anyone has input on them for international calls, please share.

Google voice has an iPhone app.