Ussd definitions

USSD

Unstructured Supplementary Service Data. GSM real-time message service, in contrast to SMS which operates in a store-and-forward manner.
Found on http://www.encyclo.co.uk/visitor-contributions.php

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USSD

Unstructured Supplementary Service Data.
Found on http://www.vodacombusiness.co.za/smme/mobile/wasp/wasp_glossary?URLId=10079

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