Patent ID: 9614979
Date: 2017-04-04
CPC Classifications: H04M,H04W

Claim:
1. A method encoded in a memory of a specialized network node configured for generating a charging record for delivering a Short Message Service (SMS) message over an Internet Protocol Multimedia Subsystem (IMS) network, comprising: determining routing information for the SMS message; receiving the SMS message with a unique charging identifier assigned to the SMS message by an SMS Service Center (SMSC) network node; attempting to deliver the SMS message to a destination device; receiving an error message generated in response to a failure to deliver the SMS message to the destination device via IMS; forwarding the SMS message to at least one of a Circuit-Switched (CS) and Packet-Switched (PS) network nodes to deliver the SMS message to the destination device; forwarding an address of the at least one of CS and PS network nodes that successfully delivered the SMS message to the destination device to the SMSC network node in response to a successful delivery; and using the address of the at least one of CS and PS network nodes, correlating Internet Protocol Short Message Gateway (IP-SM-GW) charging records and SMSC charging records to determine costs of delivering the SMS message.