Abstract: Voice packets transmitted by an originating wireless user for use in a half-duplex communication mode in a one to many communication session are monitored for an unexpected cessation. If an unexpected cessation of such voice packets is detected for a predetermined time period, the session server controlling the communications session is notified to release the supporting half-duplex communication paths associated with the originating user.

Abstract: A method for allowing a mobile of a wireless communication simultaneous access to multiple data networks coupled to the wireless communication network. A network interface is created between network controlling elements, such as Base Station Controllers, of the wireless communication network. The network interface allows various communication channels established by the mobile to be routed to network controlling elements that are coupled to the various data networks. Information from various established communication channels are routed between various network controlling elements. Thus, a mobile is able to communicate simultaneously with different data networks. The network interface also allows handoffs to be executed with virtually no interruptions and no loss of information being exchanged between the mobile and system equipment involved in the handoff.

Abstract: A wireless voice and data communication system facilitates providing packet data services to mobile subscribers even when they roam into areas that are served by a system that operates using a protocol different than the subscriber's home system protocol. In one example, a subscriber profile including appropriate authorization for packet data services that conforms to a GSM/GPRS protocol is mapped from a home location register (HLR) that uses the GSM protocol to a visitor location register that uses a CDMA/ANSI-41 protocol so that the GSM mobile subscriber obtains packet data services through provider system that uses the CDMA/ANSI-41 protocol.

Abstract: Voice packets transmitted by an originating wireless user for use in a half-duplex communication mode in a one to many communication session are intended for a group of users as determined by group information provided by the originating user. The geographic location of the members of the group that are active is determined. Based on information from the originating user designating a location in which communications with members should be established, packets are routed only to the members in the designated location.

Abstract: Voice packets transmitted by an originating wireless user for use in a half-duplex communication mode in a one to many communication session are monitored for an unexpected cessation. If an unexpected cessation of such voice packets is detected for a predetermined time period, the session server controlling the communications session is notified to release the supporting half-duplex communication paths associated with the originating user.

Abstract: A method and system are disclosed for supporting overlapping IP addresses by sharing a mobile node identifier between an IWF and a Foreign Agent in a visited data (e.g., wireless) network. The mobile node identifier is stored in lookup tables associated with the IWF (Mobile Identity table) and the Foreign Agent (Visitor List table). When a data packet travels between the IWF and the Foreign Agent, the mobile node identifier is attached to it. For data packets moving in the reverse Mobile IP traffic direction (from the mobile node), the Foreign Agent uses the mobile node identifier to identify the correct Home Agent destination by finding the corresponding Home Agent address in the Visitor List table. For forward Mobile IP traffic (to the mobile node), the IWF uses the mobile node identifier to identify the correct mobile node destination by finding the corresponding link identifier in the Mobile Identity table.

Abstract: An enhanced Time Slot Interchange (TSI) facility, in addition to serving synchronous channels of communication, decomposes and composes asynchronous data cells to provide real-time communication among and between both synchronous and asynchronous channels served by a network access switch. An asynchronous cell comprises a 5 byte header and a 48 byte payload. The payload comprises voice samples from a temporarily defined set of DSO facilities and/or data from a variety of data facilities. Time slots of the TSI are temporarily assigned to the payload bytes of each incoming asynchronous cell; the payload bytes are stored in memory locations corresponding to those time slots; and the stored data is read out during time slots assigned to the destination channels of communication. The TSI comprises three data rams to accommodate for frame to frame jitter in the time of arrival of payload samples.