In this situation, how i should proceed further. Please suggest.
reread my previous reply and meditate on what can be expected from a <forum>
the issue might be the object of a nice consulting contract,
why should be design the application for Your organization for free
but here is a hint ...
choose the standard Phonetic representation
buy the proper dictionary according to the above
( paying attention to the character set used )
define the database and load it with the dictionary data
modify the application to access and display the phonetic part using the phonetics database
train the personnel to understand and pronounce properly the phonetics ( probably the most difficult task )
really something that is above your job description and , sorry to be rude, also Your skills