| YD/T 4000-2021 English PDFUS$1899.00 ยท In stock Delivery: <= 10 days. True-PDF full-copy in English will be manually translated and delivered via email. YD/T 4000-2021: (Testing method for cellular narrowband access (NB-IoT) core network equipment for the Internet of Things (Phase 2)) Status: Valid 
 Basic dataStandard ID: YD/T 4000-2021 (YD/T4000-2021)Description (Translated English): (Testing method for cellular narrowband access (NB-IoT) core network equipment for the Internet of Things (Phase 2)) Sector / Industry: Telecommunication Industry Standard (Recommended) Word Count Estimation: 84,859 Date of Issue: 2021-12-02 Date of Implementation: 2022-04-01 Regulation (derived from): Ministry of Industry and Information Technology Announcement No. 33 of 2021 Issuing agency(ies): Ministry of Industry and Information Technology Summary: This standard specifies the test requirements and test methods for IoT-oriented cellular narrowband access (NB-IoT) core network equipment, including service tests, equipment tests and related interface tests. This standard is applicable to the testing of core network MME, S-GW, P-GW, HSS, SCEF and CG equipment in the low-power and wide-coverage IoT scenario accessed by NB-IoT technology. |