3.
    发明专利
    未知

    公开(公告)号:AT305686T

    公开(公告)日:2005-10-15

    申请号:AT02002956

    申请日:2002-02-11

    Applicant: MOTOROLA INC

    Abstract: A user terminal (10) using an internet protocol using session initiation protocol to interconnect a number of user terminals (11-13) in a conference call. A conference bridge (30) or user terminal (10) detects speech of one of the user terminals (203). A "babble" timer is started (207). The speaker is allowed to continuously speak until silence is detected (217) or until the "babble" timer timers out (211).

    PUSH-TO-TALK / CELLULAR NETWORKING SYSTEM

    公开(公告)号:CA2495001A1

    公开(公告)日:2004-02-26

    申请号:CA2495001

    申请日:2003-07-23

    Applicant: MOTOROLA INC

    Abstract: A mobile device (80) is coupled to a dispatch server (50) via a mobile netwo rk (60, 70) and an internet protocol network (40). The mobile device triggers a push-to-talk request which is processed by the dispatch server. The dispatch server then transmits this push-to-talk request to a family radio service (FRS) gateway (30). FRS gateway (30) converts this digital request to an analog request and broadcasts the request via a base station (20) to a famil y service radio (10). The FRS radio can broadcast back to the FRS gateway, whi ch will vocode the analog request, and transmit it back to the mobile device vi a the dispatch server. This invention allows mobile devices (cellular) equippe d with PTT applications to network with FRS radios.

    TEMPORARY BLOCK FLOW ALLOCATION METHOD

    公开(公告)号:CA2537717A1

    公开(公告)日:2005-04-14

    申请号:CA2537717

    申请日:2004-09-09

    Applicant: MOTOROLA INC

    Abstract: For a push-to-talk function in a mobile communication system (30), an indication is received (35) by a user (50) that the talking floor is available. Next, an uplink temporary block flow is established (36). Prior t o release of the uplink temporary block flow by the mobile communication syste m, a refresh message is sent (39) to hold the uplink temporary block flow. Downlink temporary block flows may also be refreshed by this method, or by t he mobile communication system. Then the requesting user may enable the push-to - talk function. These techniques can improve talker arbitration and call setu p delays for push-to-talk.

    GROUP CALL ADDRESS OF RECORD COMPRESSION

    公开(公告)号:AU2003287593A1

    公开(公告)日:2004-06-03

    申请号:AU2003287593

    申请日:2003-11-06

    Applicant: MOTOROLA INC

    Abstract: A method for compressing an address of record (111-117) includes a number of members in a group call (100). A compressed list (120) is generated by listing a common domain name (130), a member ID, a unique index number (121) that represents the member and optionally a presence indicator (131). The compressed list (120) is transmitted (182-186) to each of the members of the group call. When a particular member requests to speak (188) the network transmits (190-194) only the unique index number and optionally the presence information of the requesting member.

    PUSH-TO-TALK / CELLULAR NETWORKING SYSTEM

    公开(公告)号:AU2003256663A1

    公开(公告)日:2004-03-03

    申请号:AU2003256663

    申请日:2003-07-23

    Applicant: MOTOROLA INC

    Abstract: A mobile device (80) is coupled to a dispatch server (50) via a mobile network (60, 70) and an internet protocol network (40). The mobile device triggers a push-to-talk request which is processed by the dispatch server. The dispatch server then transmits this push-to-talk request to a family radio service (FRS) gateway (30). FRS gateway (30) converts this digital request to an analog request and broadcasts the request via a base station 20 to a family service radio (10). The FRS radio can broadcast back to the FRS gateway, which will vocode the analog request, and transmit it back to the mobile device via the dispatch server. This invention allows mobile devices (cellular) equipped with PTT applications to network with FRS radios.

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