CSTA-hookswitch-event { iso( 1) identified-organization( 3) icd-ecma( 12) standard( 0) csta3( 285) hookswitch-event( 286) } 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) } HookswitchID FROM CSTA-physical-device-feature { iso( 1) identified-organization( 3) icd-ecma( 12) standard( 0) csta3( 285) physical-device-feature( 137) }; HookswitchEvent ::= SEQUENCE { device SubjectDeviceID, hookswitch HookswitchID, hookswitchOnHook BOOLEAN, extensions CSTACommonArguments OPTIONAL } END -- of CSTA-hookswitch-event