Patent ID: 7996024

Claim:
A method for delivery of a short message service (SMS) message in an SMS-network comprising a network element to at least one mobile terminal, said method comprising: receiving first routing data (imsi 1 ) for delivery of said SMS-message to said mobile terminal at said network element; transmitting second routing data (imsi 2 ) from said network element in response to receiving said first routing data (imsi 1 ); receiving at said network element said SMS-message comprising said second routing data (imsi 2 ); converting at said network element said second routing data (imsi 2 ) to said first routing data (imsi 1 ) for delivery of said SMS-message to said mobile terminal; and at the network element: using said first and second routing data to correlate a request for said first routing data with receipt of said SMS message; and comparing an SMSC address in said request for said first routing data with an SMSC address in said SMS message to detect the presence of address spoofing.