To Next PageTo Next PageWhat to do if Aastra DT390 says 'Battery low, charge now'?
If your Aastra Cordless Telephone displays 'Battery low, charge now', it means the battery level is low. To resolve this, charge or replace the battery.
Why does my Aastra DT390 Cordless Telephone say 'Phonebook is not available at the moment'?
If your Aastra Cordless Telephone displays 'Phonebook is not available at the moment', it indicates that the phonebook is not responding or is currently unavailable. Try again later. If the issue persists, contact the system administrator.
What does 'SERVICE NEEDED Invalid IPDI' mean on my Aastra DT390 Cordless Telephone?
If your Aastra Cordless Telephone displays 'SERVICE NEEDED Invalid IPDI', it means that the easy replacement procedure was not followed correctly or there was a failure during the procedure. Send the phone to service.
What does 'Voice mail number not defined' mean on my Aastra DT390?
If your Aastra Cordless Telephone displays 'Voice mail number not defined', it means that there is no voice mail number defined in the phone. Define a voice mail number via WinPDM or CPDM3. Contact the system administrator.
What does 'No flash driver was found' mean on my Aastra DT390?
If your Aastra Cordless Telephone displays 'No flash driver was found', it means the telephone failed to read from flash. Send the telephone for service.
How to fix Aastra Cordless Telephone with no display?
If your Aastra Cordless Telephone has no display, it's likely due to a low battery or a defective phone. Try charging the battery.
What to do if my Aastra Cordless Telephone asks for a PIN?
If your Aastra Cordless Telephone is asking for a PIN, it means the phone’s lock is activated. Enter the required PIN code. If you have lost the PIN code, configure a new one or perform a factory reset in WinPDM.
Why does my Aastra Cordless Telephone beep once a minute and say 'No system'?
If your Aastra Cordless Telephone beeps once a minute with a low tone followed by a high tone, it means the phone is out of coverage or is defective. Stop the beep by pressing the specified button. Then, move into the coverage area. Note that when you re-enter the coverage area, it may take a few minutes for the phone to register with the system again.
What does 'No access' mean on my Aastra Cordless Telephone?
If your Aastra Cordless Telephone shows 'No access,' it means the network is in range, but you don't have access rights. Try switching the phone off and then on again.
Why is my Aastra DT390 Cordless Telephone asking for IPEI?
If your Aastra Cordless Telephone is asking for an IPEI, it means the phone is blocked because you have entered the wrong PIN code more than three times. Enter the IPEI code and press the specified button.
General| Type | Cordless Telephone |
|---|---|
| GAP Standard | Yes |
| Speakerphone | Yes |
| Frequency | 1.9 GHz |
| Range | Up to 300m (outdoor), Up to 50m (indoor) |
| Headset Connection | 2.5mm |
| Compatibility | Aastra communication platforms |
| Audio Quality | HD Audio |
