Value-added Services for SMS (VAS4SMS); Interface and signalling flow
The present document describes the stage 2 of the VAS4SMS (Value Added Service for SMS). It includes:
- The logic architecture;
- The logic elements functionality;
- The signaling flows;
- The interaction with other features.
The service requirements of VAS4SMS are specified in 3GPP TS 22.142 [2].
The functionality and mechanism of SMS Service is defined in 3GPP TS 23.040 [4].