EMI/EMC Standards ITU-T K.21, ITU-T K.44

We conduct testing strictly according to the latest International Telecommunication Union (ITU) recommendations:

• ITU-T K.21: Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents.
• ITU-T K.44: Resistibility tests for telecommunication equipment exposed to overvoltages and overcurrents – Basic Recommendation.

These standards are mandatory for Customer Premises Equipment (CPE)—hardware located at the end-user's site rather than in a central telecom exchange. Common applicable devices include:

• ADSL/VDSL Modems and Routers
• Telephone Sets (Corded and Cordless)
• Set-Top Boxes (STB)
• Private Branch Exchange (PBX) systems
• Fax Machines and Answering Machines
• Laptops and PCs connected to telecom networks

Our laboratory executes the full suite of Basic and Enhanced test levels required for compliance:

• Lightning Surge Simulation: Applying high-voltage impulses (up to 6kV for enhanced levels) to telecommunication and power ports.
• Power Induction: Testing ability to withstand continuous AC voltage interference induced by nearby power lines.
• Power Contact: Simulating direct accidental contact between telecom lines and mains electricity.
• Port Testing: Comprehensive analysis of External Ports (Mains, Telecommunication/Ethernet) and Internal Ports.

• ISO/IEC 17025 Accredited: Our testing facility is fully accredited by NABL (National Accreditation Board for Testing and Calibration Laboratories).
• ILAC MRA Signatory: Reports are recognized globally under the ILAC Mutual Recognition Arrangement, ensuring acceptance for international export and TEC (MTCTE) compliance in India.

• Standard Lead Time: 5 to 7 Working Days. This duration allows for setup, execution of destructive/non-destructive surges, and detailed reporting.
• Expedited Service: 48-72 Hours (Subject to lab slot availability).

To ensure uninterrupted testing, we require:

• 1 x Fully Functional Unit (EUT): With all necessary accessories (AC adapter, cables).
• 1 x Auxiliary Unit (Optional): Recommended if destructive testing (Criteria C) is anticipated at high voltage levels.
• Operating Instructions: A guide to set the device in its normal operating mode.

Contact us for a bespoke quotation. We provide a transparent breakdown with no hidden consumable fees.

To initiate the project and generate the final report, please provide:

1. General Technical Description: Overview of the product and its intended function.
2. Block Diagram & Schematics: Highlighting power supply and isolation circuits.
3. Bill of Materials (BOM): Specifically for safety-critical components (fuses, varistors, GDTs).
4. User Manual: The commercial manual provided to the end-user.