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ITU-T X.420 Information technology - Message Handling Systems (MHS): Interpersonal Messaging System
ITU-T E.437 Comparative metrics for network performance management
ITU-T V.91 A digital modem operating at data signalling rates of up to 64000 bit/s for use on a 4-wire circuit switched connection and on leased point-to-point 4-wire digital circuits
ITU-R F.1332-1 Radio-frequency signal transport through optical fibres
ITU-R F.1333-1 Estimation of the actual elevation angle from a station in the fixed service towards a space station taking into account atmospheric refraction
ITU-R F.1402-0 Frequency sharing criteria between a land mobile wireless access system and a fixed wireless access system using the same equipment type as the mobile wireless access system
ITU-T H Supplement 1 Application profile - Sign language and lip-reading real-time conversation using low bit rate video communication
ITU-R F.755-2 Point-to-multipoint systems in the fixed service
ITU-T H.341 Multimedia management information base
ITU-T H.450.6 Call waiting supplementary service for H.323
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