The MeeGo backend is not working for sending and receiving SMS.
The current libtelepathy is very complicated to implement SMS functions. There will be a newer version of libtelepathy that provides a simple way of implementing SMS feature. Tech Preview of this version is planned to be released around the end of week 11.
Same issue in MeeGo bugzilla https://bugs.meego.com/show_bug.cgi?id=10965