There is a nice possibility of being reachable in China via phone.

It really got on my nerves, that my clients could not reach me via phone when I was travelling in China. Now I finally have a skype-in number. The client just pays the normal fee for calls within Germany and is being redirected to my skype account.

If I am using the computer, I can just receive this call via skype - if not, it is redirected to my mobile phone in China (or Korea).

It just cost 4 cent per minute and no additional fee for the client. Soon I will be in China again - I am very curious about the quality of the connection.