Aastra DT390 User Manual (English)

Other manuals for Aastra DT390

User Guide115 pages

User Manual52 pages

Questions and Answers:

D
Donald RileyAug 29, 2025
What does 'Could not encrypt connection' mean on my Aastra DT390?
- E
  Erin RichardsonAug 29, 2025
  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.
R
Robert WheelerAug 25, 2025
What to do if Aastra DT390 Cordless Telephone displays 'Enter PIN'?
- D
  Dale SmithAug 25, 2025
  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.
C
Christina RussellAug 25, 2025
Why does my Aastra DT390 Cordless Telephone beep and display 'No system'?
- J
  Jesse MckinneyAug 26, 2025
  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.
T
Timothy TorresAug 26, 2025
What does 'SERVICE NEEDED Parameters corrupt' mean on my Aastra DT390?
- M
  Michael WeaverAug 26, 2025
  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.
A
Angel HudsonAug 26, 2025
Why is there no display on my Aastra DT390?
- X
  xroblesAug 27, 2025
  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.
R
Rachel CollierAug 27, 2025
Why is my Aastra Cordless Telephone not ringing?
- B
  Bryan JonesAug 27, 2025
  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.
J
jillbrownAug 27, 2025
Why is the signal strength icon off on my Aastra DT390 Cordless Telephone?
- J
  James JonesAug 27, 2025
  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.
T
Taylor LopezAug 28, 2025
What to do if Aastra DT390 displays 'Enter IPEI'?
- J
  John ConnerAug 28, 2025
  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.
D
Debbie AllenAug 28, 2025
What to do if Aastra DT390 Cordless Telephone says 'No access'?
- H
  Holly CampbellAug 28, 2025
  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.
T
Thomas BriggsAug 29, 2025
Why does my Aastra Cordless Telephone call switch off after 2 seconds?
- L
  Lori PottsAug 29, 2025
  If your Aastra Cordless Telephone switches off after 2 seconds during a call, it means the phone is defective. Contact the system administrator.

Aastra DT390 Specifications

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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Questions and Answers:

Aastra DT390 Specifications

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