CSTA-call-back-message-event { iso( 1) identified-organization( 3) icd-ecma( 12) standard( 0) csta3( 285) call-back-message-event( 328) } DEFINITIONS ::= BEGIN IMPORTS -- Data Types -- SubjectDeviceID FROM CSTA-device-identifiers { iso( 1) identified-organization( 3) icd-ecma( 12) standard( 0) csta3( 285) device-identifiers( 123) } CSTACommonArguments FROM CSTA-extension-types { iso( 1) identified-organization( 3) icd-ecma( 12) standard( 0) csta3( 285) extension-types( 129) }; CallBackMessageEvent ::= SEQUENCE { originatingDevice SubjectDeviceID, targetDevice SubjectDeviceID, callBackMsgSetCanceled BOOLEAN, extensions CSTACommonArguments OPTIONAL } END -- of CSTA-call-back-message-event