Patent ID: 9591148
Date: 2017-03-07
CPC Classifications: G01S,H04M

Claim:
1. In a communication device, a method comprising: storing unique inaudible sound signatures that are in a frequency range of human hearing and that identify respective communication devices in a group of devices; detecting with a microphone of the communication device audible ringtones; receiving a call announcement for an incoming audio or video call from a communication network and that is directed to the group of devices; responsive to the call announcement, determining whether any of the inaudible sound signatures are embedded in any of the audible ringtones that are detected, by: selecting one of the inaudible sound signatures determined to be present that identifies a communication device in the group of devices that is to answer the incoming call; and transmitting a message to the communication network indicating the identified communication device, in the group of devices, that is to answer the incoming call.