How do I convert/connect a CenturyLink rj-45 wall jack to a new coax cable modem

metafirma

Commendable
Jan 9, 2017
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1,510
I now have CenturyLink gear and am ready to finish cord-cutting from their Prism pkg to just an IP service - either them or Cox - and purchased a new SURFboard DOCSIS 3.0 cable modem and NetGear Nighthawk AC1900 dual-band wireless router - only to discover that CenturyLink uses a Cisco VEN401 that connects to their RJ-45 wall jack(?) with a CAT 5 cable (not coax) or into the back of their router with the usual CAT5 cable. As you perhaps know the SURFboard, like every modem I've owned since RJ-11 days, only has a coax IN port and an RJ-45 OUT port connector.
Question: How do I config the AC1900 and SURFboard to work with the existing wall outlet? I've tried going from the wall jack RJ-45 into both the Internet port and an open ethernet port not really expecting it to work and, of course, it doesn't. On one config I get a white led on the ethernet port and amber on the internet port, on the other config I get amber less on both the ethernet port and the internet port. I spent hours screwing around trying to trouble shoot the connection swapping CL components with the new components to no avail. What the heck is going on that CL uses a RJ-45 interface coming out of the wall? Is it a trick to force you to rent their stuff forever? And more to the point how the heck do I - 1. get back to a live coax interface coming out of the wall (former Cox IF) or 2. converting/connecting the new HW to the existing CL RJ-45 coming out of the wall. You can imagine how miffed (understatement) I was after wasting HOURS with their cobbled together setup as opposed to the 30 minutes I'd expected. I'm obviously no expert re this stuff and may not be fully accurate re the CL Cisco connection as I've come to suspect it may be a wireless connection to their router or the set top boxes. I checked my basement wiring and observed that CL is NOT connected to either of the standard coax terminal blocks and instead is just a twisted pair (?) grey cable running from an outside wall to the RJ-45 office jack then back out and across the house and through the floor to the RJ-45 in a bedroom. Frustrated and P-Oed! No love lost for CenturyLink at this point. Plz advise. Thank you.
 
Solution
That device is only a AP. It has ethernet as input. This means there has to be another device within 100 meters that is acting as the router.

Are you sure you even have a coax type of connection from centurylink. Everything I see is some form of DSL which comes in on phone lines. You will not be able to use the the surfboard device on a dsl connection.
That device is only a AP. It has ethernet as input. This means there has to be another device within 100 meters that is acting as the router.

Are you sure you even have a coax type of connection from centurylink. Everything I see is some form of DSL which comes in on phone lines. You will not be able to use the the surfboard device on a dsl connection.
 
Solution