Question about Gigaset Comfort 550A IP (CH-Version)

I have ordered a Gigaset Comfort 550, unfortunately this A is missing can I now also connect this phone to headset?

Hello,

This is what the manufacturer's website says: ''With the Gigaset COMFORT 550A IP flex you can manage up to six IP-based phone numbers''.

You can find the list of all compatible models here: https://www.gigaset.com/ch_de...

Some of the phones in this list are: https://www.digitec.ch/de...

Kind regards