You are getting
NO CARRIER message, which means either SIM in not registered to Network or Their is no SIM SIGNAL.
Do one thing, Power ON your MODEM, than Call Modem SIM Number from your mobile, and check either you are receiving
'RING' Message in a PC from Modem at every Ring or no response, If you are Receiving RING message from MODEM to PC, than it means their is another problem, if you are not receiving any
RING Message than you must need to check your SIM with any mobile phone.
Do let me know