Patent ID: 9628965
Date: 2017-04-18
CPC Classifications: H04L,H04W

Claim:
1. A method of creating a combined Push to Talk (PTT) group call, in which a first group of PTT clients and a second group of PTT clients participate, the first group of PTT clients participating in a first group PTT call in which a first group PTT server acts as a floor control arbitrator prior to creating the combined PTT group call, and the second group of PTT clients participating in a second group PTT call in which a second group PTT server acts as a floor control arbitrator prior to creating the combined PTT group call, the method comprising: receiving, at a first PTT server, a request for a combined PTT group call for a PTT group that includes the first group of PTT clients and the second group of PTT clients; sending, from the first PTT server to the first group PTT server, a first invite message; receiving, in response to the first invite message, a first response message; sending, from the first PTT server to the second group PTT server, a second invite message; receiving, in response to the second invite message, a second response message; and acting, at the first PTT server, as a floor control arbitrator for the combined PTT group call.