Merge with changes done by STF467

    }// end group AdressTypes

    type port SipPort message {

		  inout Request, 

        inout 

            Request, 

            REGISTER_Request, 

            INVITE_Request,

            OPTIONS_Request,

            MESSAGE_Request,

            INFO_Request,

            Response, 

		  		Raw } with { extension "address" };

            Raw 

     } with { 

         extension "address" 

     };

    signature s_SIP_conversation (in charstring text, out boolean answer);

    signature s_SIP_ringing (in charstring text, out boolean answer);

      var boolean  vc_boo_recordRoute := false;                     // boolean indicates valid recordRoute

      var template(omit) Route        vc_route;                     // value of Route header

      var template(omit) Route        vc_route_REG;                 // value of Route header from registration ServiceRoute header for initial Requests

      var UrnUriComponents vc_reqUrnUri := {namespaceId:="", namespaceSpecificString:=""};

      var boolean  vc_boo_route     := false;                       // boolean indicates valid Route

      var template(omit) Contact    vc_contact;                     // value of Contact header

      var CSeq        vc_cSeq         := c_empty_cSeq;              // value of CSeq header

      var template(value) RAck         vc_rAck         := { fieldName := RACK_E, responseNum := 1, seqNumber := 1, method := "INVITE"}; // value of RAck header