Possible Duplicate:
Do you use “a” or “an” before acronyms?
First of all let me clarify that SSTP is an abbreviation of a technical term.
I want to know, when using in a sentence, should I use a or an before SSTP and such terms?
If I'm right when letter s is at the beginning of an actual word, it is a consonant. But what about the abbreviations?
