A dispatch communications system is disclosed that facilitates group dispatch communications respectively between subscriber units residing within a first geographical area, subscriber units residing within a second geographical area, and subscriber units residing respectively within the first and second...http://www.google.fr/patents/US20060019690?utm_source=gb-gplus-shareBrevet US20060019690 - System and method of providing group dispatch calling between users in distinct geographical areas
System and method of providing group dispatch calling between users in ...
Numéro de demande: 10/889,092 Numéro de publication: US 2006/0019690 A1 Date de dépôt: 12 juil. 2004 Brevet délivré: US7206595 ( Date de délivrance 17 avr. 2007)
