Synopsis:

        SMmodinfo(mod,&pfirst_chan,&pNumchans)

Arguments:

       mod – The module number (starting from 0)

       pfirst_chan – The first voice channel on the specified module

       pNumchans – The number of voice channels on the module.

Description:  This function returns information about specified module.     The information returned is the first voice channel number on the module and the total number of voice channels on the module.

Returns: 0 upon success or -1 if an invalid module number is supplied