Firmware KX-NT551

[mau72]

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

 

[EMJP]

Select the target to update

Apply / execute
attached: PNT550 latest version (for NT55X) (ZIP)

 

[EMJP]

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

Your problem is quite simple: with the phone on the hook, press the "MUTE" button. If it is lit (red LED), you are in automatic answer mode. If it is off, the phone rings (this is only for internal calls).

Or check that forced automatic answer is disabled! (Off)