ISDN Protocol Administrator's and Developer's Guide ... - Intervoice

Subroutine Return LegsCommentsRead-only. Displays the comments about the parameter that wereentered on the subroutine’s SubroutineEntry form.Assign result toOptional. Specify a variable in which to hold the value returned bythe subroutine. The subroutine can return results on theSubroutineReturn form. If no value is returned, the result is nil.InVision receives a response from the Telephony Services Gateway thatdetermines whether a subroutine is a Success or an Error based on itsreturn code.The ISDNTKIT toolkit subroutine return legs are described in Table 4-2below.Table 4-2. ISDNTKIT Toolkit Return LegsReturn LegSuccessErrorDescriptionSubroutine was successful. The application continues on theSuccess leg in the call flow.In a returned subroutine response, a Success always has areturn code of 0 or above.Subroutine failed or exceeded the time limit. Theapplication returns an error code and continues on the Errorleg in the call flow.In a returned subroutine response, an Error always has anegative return code.4-8 ISDN Protocol Administrator’s and Developer’s Guide 60001262, First Edition