Hi Ram,

On 03/05/2015 05:56 AM, Kallumari Nagaraja Rao, RammohanX wrote:
> I am currently trying to get the cellular connection up via
> connman/ofono. We are using Telit HE910 device.
>
> I am currently able to do the following ,
>
> 1.Run daemon in background
>
> 2.Execute enable-modem app
>
> 3.List-contexts, set APN to required value

Are you running with root permissions?  Telit uses PPP for its context 
driver, which requires us to create a TUN/TAP device.

Can you enable AT command tracing:
export OFONO_AT_DEBUG=1

and run oFono with debug information enabled:
sudo ofonod -n -d

Then share this log.

>
> However, while executing ‘activate-context 0’ I am not able to proceed
> further.
>
> I get the following error message,
>
> “DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply.
>
> Possible causes include: the remote application did not send a reply, the
>
> message bus security policy blocked the reply, the reply timeout expired, or
>
> the network connection was broken.”
>

Hard to say without an AT command trace, but sounds like the modem is 
not responding to the context activation.  Would need additional 
information to say more.

Regards,
-Denis