Hi Sjur, Thanks a ton for your support. By tweaking add_modem() function in udev.c lead to success of modem enumration properly and we are able to perform all basic operations like dirty call making, sms-sending, sms-receive, etc... We are using oFono-0.36 with Linux-2.6.36-rc1 kernel. Really thanks for your time. Regards, --Kris