Date & time on ISDN phones is wrong w/ 7270

[frthomas]

I did try to search but cannot find anything similar - my rusty German probably does not help... Hopefully this is the right forum.

Swiss FBF 7270 connected to analog Swisscom line + DSL (annex A). FBF gets ntp time OK (log is correct). Date shown on my ISDN phones (Siemens Gigaset SL74 + Swisscom phone) is 9.11.19 ?

Running latest "international" firmware 54.04.76

Any idea would be appreciated. Thanks...

Fred