T43-U incoming calls do not land on the correct line/button

[complex1]

(05-08-2022 03:57 AM)rtfm2022 Wrote:  

(05-08-2022 01:23 AM)complex1 Wrote:  

(05-07-2022 03:14 PM)rtfm2022 Wrote:  hello, any little help please?

Hi,

Please reset the phone to factory settings and try again.
Is the phone auto-provisioned or installed manually?
Is the phone running on the latest firmware version?

Hello and thank you for your reply!
1. the phone is manually installed by me.
2. the phone is running latest firmware-always and i had the same problem with previous firmware too
3. resetting to factory defaults already three times in one year but it didn't help!

Hi,

You are also saying: "I have tried to change the sequence, but the same happens!".
Have you switched the numbers belonging to lines 5 and 6 with e.g. line 2 and 3 to see what happens?
Is the phone connected to some kind of PBX?