Thaitel.com a voip service provider from thailand is offering 1 hour free call to Bangkok, Thailand.
To download the software click here.
The requirement to run this software is follows.
1. Internet Explorer version 5 or later
2. Good Internet connection
3. Good Headset ( Microphone & Speaker )
They are offering this free hour is from daily 12 am to 1 am only. All times in Thailand time. They have happy hour from 1 AM to 4 AM. So their intention is to make peoples in Thailand no need to sleep to talk to their loved ones :P. The charge for Happy Hour is 1Cent/min to Bangkok and 2Cents/min to other parts of Thailand and mobile.