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ITU-T I.251.4 (08/1992)

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Number identification supplementary services: Calling Line Identification Restriction
Citation: https://handle.itu.int/11.1002/1000/1169
Approval date: 1992-08-04
Approval process:TAP
Status: In force
Maintenance responsibility: ITU-T Study Group 2
Further details: Patent statement(s)
Ed. ITU-T Recommendation Status Summary Table of Contents Download
2 I.251.4 (08/1992) In force - - here
1 I.251.4 (11/1988) Superseded -
here
here