IEC 62820-2-2017#Building an internal communication system Part 2: Requirements for advanced security building intercom systems # High security building intercom systems # All parameters*
IEC 62820-2-2017#Building an internal communication system Part 2: Requirements for advanced security building intercom systems # High security building intercom systems # Call functions
IEC 62820-2-2017#Building an internal communication system Part 2: Requirements for advanced security building intercom systems # High security building intercom systems # Error reporting
IEC 62820-2-2017#Building an internal communication system Part 2: Requirements for advanced security building intercom systems # High security building intercom systems # System redundancy
IEC 62820-2-2017#Building an internal communication system Part 2: Requirements for advanced security building intercom systems # High security building intercom systems # Channel signal-to-noise ratio
IEC 62820-2-2017#Building an internal communication system Part 2: Requirements for advanced security building intercom systems # High security building intercom systems # User interaction
IEC 62820-2-2017#Building an internal communication system Part 2: Requirements for advanced security building intercom systems # High security building intercom systems # Receiver delay
IEC 62820-2-2017#Building an internal communication system Part 2: Requirements for advanced security building intercom systems # High security building intercom systems # Event recording
IEC 62820-2-2017#Building an internal communication system - Part 2: Requirements for advanced security building intercom systems - High security building intercom systems - Secure intercom terminal calls
IEC 62820-2-2017#Building an internal communication system Part 2: Requirements for advanced security building intercom systems # High security building intercom systems # System event monitoring performance
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBAIJIAN inspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China