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ETSI ETS 300 693
- Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Cordless Terminal Location Registration (CTLR) supplementary service
- standard by European Telecommunications Standards Institute, 03/01/1996
- Publisher: ETSI
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Stage 3 of cordless terminal location registration supplementary service at Q. Also covers de-registration. Stages 1 and 2 being produced by BTC1/PT43. See ENV 41005 for definition of stage 3. See ENV 41004 for definition of Q reference point. To contains PICS proforma.