Hi Yoon, Thank very much for your guidance. I followed the same procedure ... You already did following procedure. 1. ofono-phonesim -p 12345 -gui ~/data/moblin.xml 2. sudo ofonod -nd And then, you need to type following command to power up modem(phonesim). 3. dbus-send --system --print-reply --dest=org.ofono / phonesim0 org.ofono.Modem.SetProperty string:Powered variant:boolean:true I got below response.... Must use org.mydomain.Interface.Method notation, no dot in "phonesim0" Please see the ps ax | grep ofono* ------------------------------------------------------------------------------------------------------------------------- 1609 pts/0 S+ 0:00 ofono-phonesim -p 12345 -gui /home/kandukis/data/moblin.xml 1654 pts/2 S+ 0:00 ofonod -nd ------------------------------------------------------------------------------------------------------------------------ Can you please suggest how to get-rid from this problem. regards, Krishna K Kandula _________________________________________________________________ South Cinema This Decade http://entertainment.in.msn.com/southcinemathisdecade/