Motorola - SURFboard DOCSIS 3.0 High-Speed Cable Modem - Silver

[#1]

can you use a Motorola - SURFboard DOCSIS 3.0 High-Speed Cable Modem - Silver and a router instead of the modem/router that they provide?

[#2]

I'm not sure if you're asking about DSL or FiOS service.

DSL service requires a DSL modem, not a DOCSIS modem.

FiOS does not use modems, just routers.  FiOS routers do have a MoCA (coax) port to talk to the ONT and set-top-boxes.  You can use non-Verizon routers with FiOS, but it requires an Ethernet connection from the ONT instead of MoCA.  If FiOS TV is used, a Verizon router must be in the mix.

So, the short answer is there is no Verizon service that uses DOCSIS.  Cable-modems are not used with Verizon services.

Good Luck.