The IAD registration status is normal but the indicator of a connected phone is off when the user picks up the phone.
Possible Cause
The possible causes are as follows:
The phone is faulty.
The device is faulty.
The subscriber line is unavailable.
The power supply is abnormal.
Solution
- Replace the phone with another one.
- If the problem does not occur, the original phone is faulty. Replace the original phone.
- If the problem persists, go to step2.
- Connect the phone to the telephone line of the IAD and check whether there is feed.
- If yes, ensure that the cables in the cable distribution frame (CDF) are correctly connected.
- If no, go to step 3.
- Use a telephone line delivered with the device to replace the existing one.
- If the problem is resolved, the procedure ends.
- If the problem persists, go to step 4.
- Replace the board.
- If the problem is resolved, the procedure ends.
- If the problem persists, go to step 5.
- Check the power supply, especial at small ports.
- IAD1224: 110/220 V AC or 48 V DC.
- IAD132E(T): 100-240 V AC
- IAD208E(M) and IAD104H: 12 V DC (using the power adapter to convert 100-240 V AC to 12 V DC)
- IAD101/102H: 5 V DC (using the power adapter to convert 100-240 V AC to 5 V DC)
- If yes, go to step 6.
- If no, select the correct power supply.
- Contact your service provider for assistance.
