Uniform Resource Identifier (URI) Schemes 2008-07-10 2026-01-15 Specification Required Vijay Gurbani isub Constrained isub-encoding Constrained 3GPP TS 24.229 ext Constrained phone-context Constrained enumdi No value npdi No value rn Constrained rn-context Constrained cic Constrained cic-context Constrained tgrp Constrained trunk-context Constrained premium-rate Constrained 3GPP TS 24.229 12.14.0 (cf subclause 7.2A.17) verstat Constrained 3GPP TS 24.229 v.14.5.0 sub-clause 7.2A.20 Dongwook Kim mailto:dongwook.kim&etsi.org 2026-01-15 Lionel Morand mailto:lionel.morand&orange.com 2023-05-03