Methods, systems, and apparatuses that operate with different communications devices, different users, and/or different communications networks to generate, enable, disable, transmit, and/or otherwise control an Emergency Alert Control Signal to an Emergency Alert Communications Address. According to...http://www.google.es/patents/US7483519?utm_source=gb-gplus-sharePatente US7483519 - Caller controlled systems to suppress system to de-activate 911 indicator
Caller controlled systems to suppress system to de-activate 911 indicator