Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations Chriss Miller on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

Firmware KX-NT551

mau72

Technical User
Apr 30, 2025
1
Hi all,
I'm new here, I need to update the firmware version of the phone in object because in the environment (KX-NS500) where I've installed these phones it have a strange behavior, after some minutes that the phone has started if from another extension of the system I call the caller hear the the control tone of the call but the phone called doesn't ring.
Through the web access administration of the system I saw that the firmware version is different from the other phones that instead work fine so I suppose that it could depend on the firmware.
I need also the procedure to execute the update.
Can anyone help me?
Thanks in advance for a kind help
 
1746078306885.png

1746078374353.png1746078427898.png
1746078535129.png
Select the target to update
1746078616052.png
Apply / execute
attached: PNT550 latest version (for NT55X) (ZIP)
 

Attachments

  • PNT550_002_000_011.zip
    14.1 MB · Views: 0

Part and Inventory Search

Sponsor

Back
Top