ETS 300 257 : 20002
Current
Current
The latest, up-to-date edition.
PRIVATE TELECOMMUNICATION NETWORK (PTN) - INTER EXCHANGE SIGNALLING PROTOCOL DIVERSION SUPPLEMENTARY SERVICES
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Hardcopy , PDF
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English
Stage 3 of call forwarding uncond/no reply/busy sup services at Q ref pt. See DTR/ECMA-0002 (ECMA-TR/SVC) for service description. See ENV 41005 for definition of stage 3. See ENV 41004 for definition of Q reference point. To contain PICS proforma.
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