Patent ID: 9609496
Date: 2017-03-28
CPC Classifications: H04L,H04W

Claim:
1. A method for transmitting an emergency call by a terminal, the method comprising: receiving, from a server, a first message including information on a media type supported by an internet protocol multimedia subsystem (IMS); identifying whether a non-voice media type is supported by the IMS based on the first message; transmitting, to a public safety answering point (PSAP), if the non-voice media type is supported by the IMS based on a result of the identification, a second message including information on a media type supported by the terminal, the second message identified based on the first message; and transmitting, to the PSAP, if the non-voice media type is not supported by the IMS based on the result of the identification, an invite message to establish a voice emergency call.