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ITU There are 5320 products.
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ITU-T E.550
ITU-T E.550 Grade-of-service and new performance criteria under failure conditions in international telephone exchanges
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ITU-T E.301
ITU-T E.301 Impact of non-voice applications on the telephone network
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ITU-T E.846
ITU-T E.846 Accessibility for 64 kbit/s circuit switched international end-to-end ISDN connection types
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ITU-T O.133
ITU-T O.133 Equipment for measuring the performance of PCM encoders and decoders
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ITU-T Q.86.3
ITU-T Q.86.3 Stage 2 description for charging supplementary services : Reverse charging (REV)
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ITU-T Q.698
ITU-T Q.698 Interworking of signalling system No. 7 ISUP, TUP and signalling system No. 6 using arrow diagrams
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ITU-T Q.939
ITU-T Q.939 Typical DSS1 service indicator codings for ISDN telecommunications services
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ITU-T Q.952
ITU-T Q.952 Stage 3 description for call offering supplementary services using DSS1 - Diversion supplementary services
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ITU-T Q.954.1
ITU-T Q.954.1 Stage 3 description for multiparty supplementary services using DSS 1 : Conference calling
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ITU-T Q.955.3
ITU-T Q.955.3 Stage 3 description for community of interest supplementary services using DSS 1 - Clause 3: Multi-level precedence and preemption (MLPP)
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ITU-T R.11
ITU-T R.11 Calculation of the degree of distortion of a telegraphie circuit in terms of the degrees of distortion of the component links
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ITU-T R.114
ITU-T R.114 Numbering of international TDM channels
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