Unstructured Supplementary Service Data (USSD)
TS 03.90Rel-7Services2GIntermediate
Defines USSD mechanism for transparent communication between MS users and PLMN operator applications, enabling development of PLMN-specific supplementary services.
Protocol Definition
Document Type
Technical Specification
Network Layer
Services
Subcategory
Supplementary Services
Business Impact
Medium
Key Technologies
GSMUSSD
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View the complete text of 3GPP TS 03.90 with table of contents and cross-references.