In India, all telecom and related information and communications technology equipment is subject to Mandatory Testing and Certification of Telecom Equipment (MTCTE) procedure led by the Telecommunication Engineering Centre (TEC) of India. The MTCTE procedure has been launched from July 2019 and includes simplified certification scheme (SCS) and general certification scheme (GCS). Step by step, the TEC is adding new categories of products that require the MTCTE procedure. These steps are known as phases. The TEC has recently notified implementation of new phases. Thus, the following categories of product under phases III and IV should pass the MTCTE procedure through the GCS:

Phase III includes:

1. Base station for cellular network
2. Repeater for cellular network
3. Compact cellular network
4. Smart/CCTV camera
5. Smart watches
6. Smart electricity meter
7. Tracking device
8. IoT gateway 
9. End-point device for environmental monitoring
10. Equipment operating on 2.4 GHz and 5 GHz band

Phase IV includes:

1. Transmission terminal equipment (DWDM, DXC)
2. Optical fibre (single mode)
3. Satellite communication equipment
4. Radio broadcast receiver
5. Mobile radio trunking system
6. HF radio
7. VHF/UHF radio system equipment
8. PTP PMP microwave fixed radio systems
9. IP security equipment
10. Router
11. LAN switch
12. Precision timing protocol grand master equipment
13. IP multimedia conferencing equipment
14. Mobility management entity (MME)
15. Point of sale devices
16. Signalling gateway 
17. Media gateway
18. Softswitch
19. Digital subscriber line equipment
20. Session border controller
21. Base station controller/radio network controller
22. Mobile switch center (MSC)/MSC- server (S)/ gateway MSC (GMSC)/GMSC-S
23. Equipment identity register
24. Subscriber identity module
25. OTA platform and device manager platform
26. Home location register/home subscriber server/authentication center
27. Serving/gateway GPRS support node
28. Serving/packet gateway
29. Short message service center
30. Cell broadcast center
31. Service control point 
32. Operation maintenance center/ element management system (EMS)/ network MS/operation support system
33. Gateway mobile location center 
34. Serving mobile location center
35. Optical fibre cable
36. Infiniband switch

Categories of product require the MTCTE procedure through the GCS:

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Phase IV:

1. Conferencing equipment 

Please, note that certification of products under Phase III becomes mandatory from July 1st, 2022. However, applications for the MTCE procedure can be submitted starting from October 11, 2021.

Certification of products under Phase IV with respect to EMI/EMC and safety requirements becomes mandatory from February 1, 2022 and the other essential requirements must be verified with the certificate from July 1st, 2022. That is why the application procedure within Phase IV is divided into to periods:

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1. October 11, 2021for EMI/EMC and safety requirements 
2. January 1, 2022for the other essential requirements 

The TEC also reminds that submitted test reports must not be older than two years. 

Official Source