Update 33128/r17/TS33128Payloads.asn

     groupChatSessionID    [11] RCSGroupChatSessionID OPTIONAL,

     rCSEvent              [12] RCSEvent OPTIONAL,

     iMDNInfo              [13] IMDNInfo OPTIONAL,

     chatSubject           [14] chatSubject OPTIONAL  

     chatSubject           [14] ChatSubject OPTIONAL  

}

RCSSessionEstablishment ::= SEQUENCE

    sDPAnswer             [10] SDPInfo,

    location              [11] Location OPTIONAL,

    groupChatSessionID    [12] GroupChatSessionID OPTIONAL,

    rCSFileTransferFlag   [13] RCSFileTransferFlag OPTIONAL

    chatSubject           [13] ChatSubject OPTIONAL,

    rCSFileTransferFlag   [14] RCSFileTransferFlag OPTIONAL

}

-- ===========