Patent ID: 8432899

Claim:
A method of transmitting an IP-based message from an initiator to a receiver lacking an IP address via a packet-switched (PS) network capable of communicating IP-based messages, a circuit-switched (CS) network capable of communicating non-IP-based messages, and a serving node in communication with the PS network and the CS network, the method comprising: receiving an IP-based message via the PS network at the serving node from the initiator, the IP-based message intended for receipt by the receiver; responsive to the IP-based message, the serving node generating a trigger message, the trigger message comprising a non-IP-based message comprising instructions for the receiver to initiate a connection to the PS network and instructions for the receiver to obtain the IP-based message from the serving node; transmitting the trigger message from the serving node to the receiver via the CS network; responsive to the trigger message, the serving node receiving a request from the receiver for initiating a connection to the PS network; transmitting to the receiver the IP-based message from the initiator; and wherein the trigger message comprises instructions for the receiver to pull the IP-based message from the serving node via the PS network after initiating a connection to the PS network.