hello lfr
Welcome to the community.
I doubt, this router can be set to bridge mode. You might want to have a look at the manual.
One requirement might be optaining a public IPv4 address from Sunrise.
Since you’re a DSL user, you can use your own hardware and are not required to use the hardware given by Sunrise. Any by Swisscom approved hardware, should work with the Sunrise DSL connection.
