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Essential safety measures to prevent electric shock and ensure proper servicing.
Procedure to test insulation resistance before returning equipment to prevent shock hazards.
Overview of the system's control bus, switching, power input, and environmental requirements.
Information on the system's capacity for CO lines and extensions.
High-level block diagram illustrating the main components and their interconnections.
Detailed block diagram of the main unit's internal structure and signal flow.
Explanation of the switching power supply, DC-DC conversion, and battery backup functions.
Details on bell signal detection, DC loop formation, and dial transmission circuits.
Explanation of the space division switching system and its IC operation for connecting various circuits.
Diagnostic steps for system failure, checking power supply, main board, and 2AP board.
Procedure to diagnose and resolve issues when no dial tone is present on the telephone.
Steps to identify why dialing is not working, checking dial tone and DTMF signals.
Essential safety measures to prevent electric shock and ensure proper servicing.
Procedure to test insulation resistance before returning equipment to prevent shock hazards.
Overview of the system's control bus, switching, power input, and environmental requirements.
Information on the system's capacity for CO lines and extensions.
High-level block diagram illustrating the main components and their interconnections.
Detailed block diagram of the main unit's internal structure and signal flow.
Explanation of the switching power supply, DC-DC conversion, and battery backup functions.
Details on bell signal detection, DC loop formation, and dial transmission circuits.
Explanation of the space division switching system and its IC operation for connecting various circuits.
Diagnostic steps for system failure, checking power supply, main board, and 2AP board.
Procedure to diagnose and resolve issues when no dial tone is present on the telephone.
Steps to identify why dialing is not working, checking dial tone and DTMF signals.
General| Music on Hold | Yes |
|---|---|
| Weight | 2.5 kg |
| Humidity | 10% to 90% (non-condensing) |
| Features | Call forwarding, call waiting, caller ID |
| Power Supply | AC 100-240V, 50/60Hz |
| Operating Temperature | 0°C to 40°C |
