Patent ID: 8903445

Claim:
A Push to talk Over Cellular (PoC) Server for providing PoC communication services in a communications system, said PoC Server being arranged to perform at least one Controlling PoC Function for PoC Clients participating in a PoC Session, wherein said PoC Server is arranged to: receive a first information indicating PoC Session priority order for said PoC Session for each of said PoC Clients participating in said PoC Session; receive a second information, if anyone of said PoC Clients is also participating in other simultaneous PoC Sessions, indicating said PoC Session priority order for said other simultaneous PoC Sessions for each of said PoC Clients participating in said other simultaneous PoC Sessions; store said first and second information for enabling control of a transmission of Media in said PoC Session based on said first and second information; enable access to at least one of said first and second information for each of said PoC Clients participating in said PoC Session; receive a subscribe message from a subscribing PoC Client participating in said PoC Session; and send a notification comprising said first and second information to said subscribing PoC Client in response to said subscribe message.