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ITU-T E.526 Dimensioning a circuit group with multi-slot bearer services and no overflow inputs
ITU-T G.122 Influence of national systems on stability and talker echo in international connections
ITU-T G.173 Transmission planning aspects of the speech service in digital public land mobile networks
ITU-T G Supplement 29 Planning of mixed analogue-digital circuits (chains, connections)
ITU-T G Supplement 32 Transmission aspects of digital mobile radio systems
ITU-T N.55 Organization, responsibilities and functions of control and sub-control international television centres and control and sub-control stations for international television connections, links, circuits and circuit sections
ITU-T P Supplement 20 Examples of measurements of handset receive-frequency responses: Dependence on earcap leakage losses
ITU-T Q.82 Stage 2 description for call offering supplementary services - Clause 2: Call forwarding; Clause 3: Call deflection