What to do if my Aastra Cordless Telephone shows 'Enter PIN code'?
If your Aastra Cordless Telephone displays 'Enter PIN code', it means the telephone lock is activated. You should enter the required PIN code. If you've lost the PIN code, enter a new one via PDM or perform a factory reset via PDM.
What to do if Aastra DT390 Cordless Telephone displays 'Enter PIN'?
If your Aastra Cordless Telephone displays 'Enter 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 DT390 Cordless Telephone beep and display 'No system'?
If your Aastra Cordless Telephone is beeping once a minute (for up to 30 minutes) with alternating low and high tones, and the display shows 'No system', it indicates that the phone is out of coverage or is defective. To stop the beeping, press the specified button. Move back into the coverage area, or contact the system administrator. Note that it may take a few minutes for the phone to register with the system again once you are back in range.
What to do if Aastra DT390 display shows 'Enter PIN'?
If your Aastra Cordless Telephone displays 'Enter PIN', it means the phone's lock is activated. Enter the required PIN code. If you've lost the PIN code, configure a new one or perform a factory reset using WinPDM or CPDM.
How to fix 'Could not encrypt connection' error on Aastra Cordless Telephone?
If your Aastra Cordless Telephone displays 'Could not encrypt connection,' it means that the “Encryption Required” parameter is enabled in the phone in combination with either or both of the following options: one or more encrypted base stations or one or more unsupported base stations. To solve this: * Disable the parameter. * Enable the encryption in the base stations. * Use the supported base stations. Ensure you are using base stations of version 3.1.x or higher.
How to fix 'No display' on Aastra Cordless Telephone?
If you see 'No display' on your Aastra Cordless Telephone, it means the battery level is low or the phone is defective. Charge the battery. If the issue continues, contact your system administrator.
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.
What to do if my Aastra DT390 says 'Enter IPEI'?
If your Aastra Cordless Telephone displays 'Enter IPEI,' it means the phone is blocked because you entered the wrong PIN code more than three times. To resolve this, enter the IPEI code and press the designated button.
Why does my Aastra Cordless Telephone call switch off after 2 seconds?
If your Aastra Cordless Telephone switches off after 2 seconds during a call, it means the phone is defective. Contact the system administrator.
Essential safety precautions to reduce risks like fire, shock, and injury.
Step-by-step guide to power on the DT390 cordless phone.
Instructions on how to power off the DT390 cordless phone.
How to answer incoming calls, mute ringing, and change answering modes.
How to transfer an ongoing call to another extension or busy line.
Protecting the phone from unauthorized use by requiring a PIN on power-on.
Instructions on how to charge the phone's battery using desktop or rack chargers.
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 |
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