Re: ECMS / CISAC

>How does one from Tonga get an ISPN number?

Assuming you mean an ISBN, it appears that Fiji issues the ISBNs for South Pacific islands:

South Pacific           982
            The ISBN Officer
            Regional ISBN Centre
            The University of the South Pacific Library
            Attn. Ms. Esther Williams
            P.O. Box 1168
            Suva
            Fiji    
                    T (+679) 313900 Ext. 283
                    Fax (+679) 300830
                    Tx fj 2276

Note that ISBNs aren't issued one at a time, you buy them in blocks of 10, 100, or 1000.

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