PUSH TO TALK OVER CELLULAR HAVING PRODUCTIVE USE OF DEAD TIME AND INCLUSION OF DIVERSE PARTICIPANTS

摘要

Various communications clients such as, for example, Push to Talk over Cellular ("PoC") client applications and PoC devices provided with client applications, provide extended services such as filler information for dead time intervals, and communication of PoC session content with non-PoC subscribers and with PoC subscribers who are offline. Through the use of one or more client applications to provide these extended services, the user experience is enriched and operators may monetize these extended services without need to modify the operating system or the network.