Avoid Roaming Charges

I spoke to someone in the telco business last night. He told me of this service provided by a third party telco:

* you open an account with the third party telco
* when you are overseas, you can get a local SIM card for your mobilephone
* you send a SMS to the telco to give your new "local" number
* they will divert all calls from your Singapore mobilephone to the "local" number
* you pay local call rate for your incoming calls, plus a small charge to the telco
* they also provide an option for you to update the "local" or diverted number through the internet website

This seems to be a good service, and is quite convenient. He will send me the URL of the service provider.