Abstract: A system and method for providing radio access network (RAN) aware service delivery for Push-to-talk-over-Cellular (PoC) networks, wherein at least one of the servers performs an presence delivery method that reduces presence notifications delivered to the mobile units participating in communications services. The effective presence delivery method may comprise: throttling the delivery of the presence notifications; avoiding simultaneous dispatch of the presence notifications to multiple watchers located in the same cell or group of cells of the wireless communications network; or the server delaying sending the presence notifications for a mobile unit until the mobile unit triggers the server.

Abstract: A system and method for providing advanced voice services in a wireless communications network. The system also interfaces to an Internet Protocol (IP) network to perform the advanced voice services for mobile units in the IP network and includes a protection mechanism against Voice-over-IP (VoiP) Denial-of-Service (DoS) attacks utilizing Advanced Group Services (AGS).

Abstract: WiFi interworking solutions for Push-To-Talk over Cellular (PoC) in the Open Mobile Alliance (OMA) Standard.

Abstract: A system and method for supporting multiple simultaneous connections to different access networks for use in Push-to-talk-over-Cellular (PoC). One or more servers interface to a plurality of wireless communications networks to perform advanced voice services for mobile units therein, including the PoC call session. The servers and mobile units communicate with each other using control messages, and the servers switch voice frames between the mobile units. At least one of the servers manages the PoC call session by acting as an arbitrator, and controls the sending of the control messages and the voice frames to and from the mobile units. At least one of the mobile units and at least one of the servers use multiple simultaneous connections to the plurality of wireless communications networks to communicate with each other.

Abstract: WiFi interworking solutions for Push-To-Talk over Cellular (PoC) in the Open Mobile Alliance (OMA) Standard.

Abstract: A converged mobile-Web communications solution interfaces to both a mobile phone network and an Internet or Intranet network, so that services that are provided to mobile phones in the mobile phone network are also provided to web clients or web widgets in the Internet or Intranet network.

Abstract: Enhanced Group Calling Features for Connected Portfolio Services in wireless communications networks, such as a mobile or cellular phone communications networks. The Connected Portfolio Services include Mobile Conferencing (Scheduled/Instant/Reservationless Conference), Family Connect, Buddy Connect, and Quick Reach, while the Enhanced Group Calling Features include Voicemail Diversion (the recognition of a diversion to voicemail and dropping the leg), Reverse Quick Reach (where a terminating subscriber defines how a call dialed to his/her mobile number should be handled and directed), and Single Number Group Calling (an optimal design implementation of single number based group calling).

Abstract: Enhanced Group Calling Features for Connected Portfolio Services in wireless communications networks, such as a mobile or cellular phone communications networks. The Connected Portfolio Services include Mobile Conferencing (Scheduled/Instant/Reservationless Conference), Family Connect, Buddy Connect, and Quick Reach, while the Enhanced Group Calling Features include Voicemail Diversion (the recognition of a diversion to voicemail and dropping the leg), Reverse Quick Reach (where a terminating subscriber defines how a call dialed to his/her mobile number should be handled and directed), and Single Number Group Calling (an optimal design implementation of single number based group calling).

Abstract: A converged mobile-Web communications solution interfaces to both a mobile phone network and an Internet or Intranet network, so that services that are provided to mobile phones in the mobile phone network are also provided to web clients or web widgets in the Internet or Intranet network.