Mailbox active but calls are NOT diverted to mailbox

[Wurtz]

I have set up my mailbox with 5500 code and recorded myself. I have also set up call forwarding with *67#.

However, when I switch my handy to Airplane mode and try to call it from another phone, no matter how I configure my mailbox, I always end up hearing the standard vodafone machine:
"vodafone teilnehmer ist jetzt nicht erreichbar"
later it says the same but in english and call ends.

I want such calls to reach my mailbox (voice mail) when I'm not available.

[Wurtz]

By the way these instructions seem to be outdated:

"1. Mailbox anrufen: Mit eigenem Handy 5500 wählen
2. Vom Hauptmenü aus folgende Tasten drücken: Mailbox einschalten: 2 7 1 Mailbox ausschalten: 2 7 2 3.
Bestätigen mit #: Die Ansage informiert, dass die Anrufumleitungen jetzt zur Mailbox ein- bzw. ausgeschaltet werden."
(source: it's what virtual assistant Tobi has just replied me)

I don't get any confirmation after typing 271#, it says here I should get one.
Also when I press buttons slowly I hear machine saying that I pressed false button ("falsche Taste"). I think number "7"  is no longer assigned to any option.

[Jioti · Accepted solution]

Hello @Wurtz

Please try the following GSM code: **62*5500#Dial button. The 67 code you have chosen just sets up the redirection in the busy case. Good luck and greetings. Jioti

[Wurtz]

Thank you Jioti, it helped!

It amazes me why such important code is not mentioned in instructions. Mailbox is pretty much useless without call redirection.