Digital cellular telecommunications system (Phase 2+);
Unstructured Supplementary Service Data (USSD) - Stage 2
ETSI TS 100 549 V7.0.0 (1999-08)
Saturday, January 10, 2009
USSD Spec - Stage 1
3rd Generation Partnership Project;
Technical Specification Group Services and System Aspects;
Unstructured Supplementary Service Data (USSD) - Stage 1
(Release 1999)
22090-310
Technical Specification Group Services and System Aspects;
Unstructured Supplementary Service Data (USSD) - Stage 1
(Release 1999)
22090-310
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