Orpheum offers its iVoice (SIP trunking) and hPBX (Hosted/Virtual PBX) services exclusively to businesses in the USA and Canada. Both services start at $25 per month.
www.voipding.com for details.
Billing increment: 5 seconds.
Prices from: 0.01 euro
Buy credit: paypal, moneybookers,bank transfer...
www.voipding.com