Abstract: A system and method is provided for sending a message type identifier through a speech codec (in-band) such as found in a wireless communication network. A first predetermined sequence with noise-like characteristics identifies a first message type. A second predetermined sequence with noise-like characteristics identifies a second message type.
Type:
Grant
Filed:
June 28, 2010
Date of Patent:
April 3, 2012
Assignee:
QUALCOMM Incorporated
Inventors:
Christian Pietsch, Marc W Werner, Christoph A Joetten, Christian Sgraja