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ITU There are 5339 products.
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ITU-T Q.81.7
ITU-T Q.81.7 Stage 2 description for number identification supplementary services : Malicious call identification (MCID)
$25.00In Stock -
ITU-T Q.733.3
ITU-T Q.733.3 Stage 3 description for call completion supplementary services using Signalling System No. 7 : Completion of calls to busy subscriber (CCBS)
$25.00In Stock -
ITU-T Q.737.1
ITU-T Q.737.1 Stage 3 description for additional information transfer supplementary services using Signalling System No. 7 : User-to-user signalling (UUS)
$25.00In Stock -
ITU-T Q.784.2
ITU-T Q.784.2 ISUP basic call test specification: Abstract test suite for ISUP'92 basic call control procedures
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ITU-T D.232
ITU-T D.232 Specific tariff and accounting principles applicable to ISDN supplementary services
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ITU-T E.113
ITU-T E.113 Validation procedures for the international telecommunications charge card service
$25.00In Stock -
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ITU-T I.252.7
ITU-T I.252.7 Call offering supplementary services : Explicit call transfer
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ITU-T E.190
ITU-T E.190 Principles and responsibilities for the management, assignment and reclamation of E-series international numbering resources
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