INT F1 - Common ISDN API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. (CAPI) v1.1 - "API-RELEASE" - UNREGISTER FROM CAPI AH = 02h DX = application ID (see AH=01h) Return: AX = status (0000h,1002h) (see #04069) Notes: the caller is required to provide at least 512 bytes of stack space SeeAlso: AH=01h,INT F1/AL=02h (Table 04069) Values for CAPI v1.1 error code: 0000h successful 1001h registration error 1002h invalid application ID 1003h message too small or incorrectly coded message number 1004h invalid command or subcommand 1005h message queue full 1006h message queue empty 1007h message(s) lost due to queue overflow 1008h error uninstalling SeeAlso: #04070