The CODEC adjustment system is used when an incoming call is received for emergency services and the received audiovisual data does not reflect the information useful to the emergency services operator. The operator may want to hear background noise or increase the fidelity of the call in order to identify...http://www.google.es/patents/US7623550?utm_source=gb-gplus-sharePatente US7623550 - Adjusting CODEC parameters during emergency calls
