Philips Voip 321 at Siemens Gigaset 3035 announce

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Hello,
yesterday the cord lot telephone has Voip 321 of Philips since. Also everything folds.
I would like to announce this telephone now however still additionally to my house telephone system a Gigaset 3035 isdn around also normal over the fixed net to telephone.
That unfortunately does not fold however.
Both devices always bring the message to “errors during the registration”
Allegedly however both GAP are to be able. In the guidance of Philips is located also which one the equipment to other basis stations announce can.
Also the pins with announce are always correctly entered.
Does someone have one taps for me?
Thanks
croonie