Patent ID: 7983705
Filing Date: 2011-07-19
Classification: H04L,H04M,H04W

Abstract:
1. A method of operating a push-to-talk communication system, the method comprising: transferring a push-to-talk registration server role, a push-to-talk call server role, and a push-to-talk media server role from a domain name server; receiving the push-to-talk registration server role in a first server, and in response, registering users to perform the push-to-talk registration server role and maintaining a first time of day; receiving the push-to-talk call server role in a second server, and in response, establishing push-to-talk calls to perform the push-to-talk call server role and maintaining a second time of day; receiving the media server role in a third server, and in response, transferring push-to-talk media to perform the media server role and maintaining a third time of day; in a management system, receiving data from the first server, the second server, the third server, and the domain name server, processing the data to verify that the first time of day, the second time of day, and the third time of day are synchronized, and to verify that the first server is performing the registration server role, the second server is performing the call server role, and the third server is performing the media server role.