Patent ID: 6161085
Filing Date: 2000-12-12
Classification: H04W

Abstract:
A method of selecting a first or a second speech codec between a first and a second transceiver in a telecommunications system, the method in comprising:at the beginning of a connection, transceivers use the first codec;when a connection has been established, the first transceiver send the second transceiver a message contained in a speech frame, the first transceiver inquiring by the message, whether the second transceiver is able to use the second speech codec;in response to the message sent by the first transceiver, the second transceiver sends the first transceiver a message contained in a speech frame stating that it is able to use the second speech codec, after which the second transceiver proceeds to use the second speech codec; andin response to the message sent by the second transceiver, the first transceiver proceeds to use the second speech codec.