Gigaset duo A 605 H directory transfer between handsets

Hello,
Weirdly, it's impossible to find the manual for this device
it only appears for sale at Boulanger but unknown at Gigaset???
Normally, if the option to copy from one handset to another exists, you need to go to "Directory" and look for "Copy list."
If this copy is possible, be careful to only copy from the handset that has the directory to the other one that doesn't.

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It’s very difficult to catch a black cat in a dark room.
Especially when it’s not there...