The German for: withhold number

What the subject says.

If I do not want to reveal my number when calling, what do I need to search for on the Telekom webshite to find it? Ta.

Nummer unterdrücken (with or without umlaut?)

Nothing on the Telekom site. Thanks anyway.

If you have an analogue telephone line and your line is enabled for the CLIR2 service (most lines since 1998) then you can dial "*31#" before making a call to suppress outgoing caller ID. This works on a call-by-call basis, so you need to do it each time you make a call, or simply call Telekom and have outgoing CLIR disabled on a permanent basis (The CLIR3 service).

See German telecom: Hiding caller ID for a detailed description (which avoids the eternal phrase "use the search function" !) before the ever-alert moderators merge the threads...