Patent ID: 9619442
Date: 2017-04-11
CPC Classifications: G06F,H04L,H04W

Claim:
1. A method, on a Mobile Equipment (ME), comprising: sending, to a universal integrated circuit card (U ICC), a download profile, the download profile indicating support for an Internet Protocol (IP) Multimedia Subsystem (IMS) Registration Event; in response to sending the download profile, receiving, from the UICC, a SET UP EVENT LIST command setting up a current event list, the current event list including the IMS Registration Event; transmitting, using Session Initiation Protocol (SIP), a SIP REGISTER message to an Internet Protocol (IP) Multimedia Subsystem (IMS) network to register with an IMS service; receiving a SIP failure response to the SIP REGISTER message from the IMS network; in response to receiving the SIP failure response from the IMS network, informing the UICC of the SIP failure response based on the IMS Registration Event in the current event list.