Using the MTP 3 service function reference

This section provides an alphabetical reference to the MTP 3 service functions. A typical function includes:

Prototype

The prototype is followed by a list of the function arguments. NMS Communications data types include:

  • U8 (8-bit unsigned)

  • U16 (16-bit unsigned)

  • S16 (16-bit signed)

  • U32 (32-bit unsigned)

  • Bool (8-bit unsigned)

If a function argument is a data structure, the complete data structure is defined.

Return values

The return value for a function is either MTP3_SUCCESS or an error code. For asynchronous functions, a return value of MTP3_SUCCESS (zero) indicates the function was initiated; subsequent events indicate the status of the operation.