No. There two separate modems that work as modems. The CBR40 can be bridged, however this disables the wifi on the CBR40 and makes it just a modem only.
Your best option if you want voice support, keep the CM modem and return the CBK40 system and get a Orbi RBK40/50 system.
https://www.netgear.com/orbi/wifi-systems.aspx
These systems don't have the built in cable modem and it's just the wifi router features that you would need to work with the CM voice modem.
@Sturg62 wrote:
I know CBK40 does not support ISP embedded voice on cable from ISPs. I have Xfinity as my cable provider and use aCM500V router for cable and phone. Won an Orbi CBK40 in a silent auction package and want to know if I can use it just as a wifi router by hooking it to CM500V through ethernet port to preserve my phone line
