Questions about Gigaset CL390A Duo

German version. There is apparently also a CH version. Don't know what the difference is.

I have an older version of the Salt fibre router (not X6) and the CL390A Duo works perfectly.

Yes, these are DECT phones. The "white square device" is the base station. https://www.gigaset.com/ch_de/gigaset-cl390a-ch/

Yes

Good day. I can't give you any information about that. I have never tried it myself. Have a nice day

Yes, I also use this device with the Swisscom Box.

According to the product specifications yes :)

The telephone does not have a plug but the Dect antenna and this has the RJ-11 plug. It looks like a network plug (Lan) but only with 4 pins.

Hello, do you hear the messages on the answering machine live? When teleworking, not always ideal... Where can I adjust the volume? Thank you for your answers.

The Plantronics C565 headset, on the other hand, connects to the base of the Gigaset CL390A, see for example https://www.officeeasy.fr/pack-gigaset-cl390-plantronics-c565-duo.html

Up to 4 phones can be paired on the base (follow instructions from CL390A https://gse.gigaset.com/fileadmin/gigaset/images/CustomerCare/Manuals/CLxx/CL390-CL390A/A31008-M2902-B101-1-19_10-06-2020_de_AT-DE-LU.pdf ). Unfortunately, the CL390HX cannot be found here individually. But this base is also compatible with other Gigaset phones. here is a list of compatibility: https://www.gigaset.com/ch_de/cms/service/kompatibilitaet/produkte.htm e.g. compatible would be: Gigaset CL660HX Gigaset C570HX cordless extension handset with caller ID but there are several more

There are two telephones, a base station (which contains the answering machine) and two charging stations in the package.