ITU-T Rec. H.243 Corrigendum 1 (11/2000) Procedures for establishing communication between three or more audiovisual terminal
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Procedures for establishing communication between three or more audiovisual terminals using digital channels up to...
CORRIGENDUM 1
1) Clause 5.5
    5.5 Extension to multiple channels
2) Appendix II
3) Clause 2 - References