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ETSI EN 301 258
- Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Recall supplementary service [ISO/IEC 15052 (1997), modified]
- standard by European Telecommunications Standards Institute, 10/01/1998
- Publisher: ETSI
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Contains stage 3 description of the Recall supplmentary service. See ECMA DTR/ECMA-00002 (ECMA-TR/SVC) for a description of the supplementary service. See ENV 41 005 for definition of stages.