Is there any way to change IM (telepathy) status using the console command?

I was thinking about python D-Bus messaging... but it doesn't look easy to implement.

The idea is to change status based on wlan0 AP or even mac address of the AP. I know how to run the script at the wireless connection event. And I know how to check AP name or its mac address. But I really have no idea how to change IM status. Googling didn't give me the answer.

Any ideas?