What does 'SERVICE NEEDED Parameters corrupt' mean on my Aastra DT390?
If your Aastra Cordless Telephone displays 'SERVICE NEEDED Parameters corrupt', it means the phone is defective. Select the reset option using the middle soft key and upgrade the phone’s software. If there is no reset option available, or if the error persists, the phone requires repair. Send the phone for service.
Why is there no display on my Aastra DT390?
If your Aastra Cordless Telephone displays 'No display', it indicates that the battery level is low or the phone is defective. Charge the battery to resolve the issue.
Why is my Aastra Cordless Telephone not ringing?
If you are experiencing 'No ringing' on your Aastra Cordless Telephone, it could be due to several reasons: 1. The mute icon is displayed. 2. The ring volume is set to silent. 3. The phone is defective. Here’s how to address these potential causes: 1. To deactivate mute, press and hold the appropriate button. 2. To increase the volume, go to settings>Sound & Alerts>Volume. 3. If the issue persists, the phone may need to be sent for service.
Why is the signal strength icon off on my Aastra DT390 Cordless Telephone?
If the signal strength icon is off on your Aastra Cordless Telephone, it means you are out of the system coverage area, or the phone is defective. Try moving into the coverage area.
What to do if Aastra DT390 displays 'Enter IPEI'?
If your Aastra Cordless Telephone displays 'Enter IPEI', it means the phone is blocked because the wrong PIN code was entered more than three times. Enter the IPEI code and press the designated button.
What to do if Aastra DT390 Cordless Telephone says 'No access'?
If your Aastra Cordless Telephone says 'No access', it means the network is in range, but there are no access rights. Try switching the phone off and then on again.
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.
What does 'Could not encrypt connection' mean on my Aastra DT390?
If your Aastra Cordless Telephone displays 'Could not encrypt connection', it is because 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, one or more unsupported base stations. To solve this problem, perform one or more of the following steps: * Disable the parameter. * Enable the encryption in the base stations. * Use the supported base stations, ensuring they are version 3.1.x or higher.
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.
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 |
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.
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