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We have a Comcast RCA DCM425 modem. We are getting our cable through there as well. We recently tried to hook up a router to the cable modem, it didn't work, so we then hooked everything up like it was before, and now the internet isn't working.

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Hi lacrosse296,

I am sorry to learn that you are having difficulties with your service.

It is possible that the problem is with the wiring. Send us the phone number on your account at We_Can_Help@cable.comcast.com so that we can assist further.

Thanks!

Mark C.
Comcast Corp.

Posted on Jul 07, 2008

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I see that people are asking about driverss for the RCA dcm425 cable modem. I just bought a new computer, and I connected it to the my old dcm425 modem through a router and it works just fine. I didn't...


The trick about all this is that the software does not configure the computer, but the modem.
So once it has been configured through a computer then plugged to a router, any computer plugged to the said router will have access to the Internet.

The whole process of installing/configuring will happen if you replace the old modem and/or plug a new computer directly to the modem.

May 07, 2011 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

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Can i hook up 2 computers to the rca dcm425 without a wireless router


RCA DCM425 digital cable modems only have one Ethernet cable located in the back of the device. In order to have two computers connected at the same time you will need to have router. The router will connect to the Ethernet port on the back of the RCA modem and then you can have up to 4 computers connected directly to the router using Ethernet cables. If any of your computers are wifi compatible they will also be able to get online by using the wifi from the router.

Sep 29, 2010 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

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RCA DCM425. What coaxial cable do I use? The RG6


Contact your cable provider, you most likely have a signal issue related to poorly seated fittings, outdated or wrong bandwidth splitters, or low signal from outside feed. Quadshield rg6 is the best indoor residential application though. -Comcast tech

Oct 18, 2009 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

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Trouble connecting netgear wireless router to rca modem DCM425


First try connection the Yellow ethernet cable from the rca modem to your computer's network connection. If you get a connection this way, then your modem will work with a ethernet cable. If not, then call Comcast for help. The modem ethernet out to computer port must be connected to the wan line of the router. Then you can connect an ethernet cable from your computer network connection to one of the 4 ports of the router. For wireless connections you must set up the router and wireless adaptor with the same settings to connect. Follow the routers directions.
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Jul 10, 2009 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

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Trying to install router for wireless


If that's hooked to comcast you can only have one computer hooked up to it, and no modems as they block mac address. If you are a Comcast customer there is a workaround. Turn on your wife's wireless if she hasit, if not get her a wireless card USB is easiest. Turn on sharing on that wireless card and you will be able to access the internet through your wifes computer, and not run afoul of your Comcast agreement. Or request an upgrade to a wireless router from Comcast but your rent goes from $3.00 per month to $10.00!

May 12, 2009 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

1 Answer

Linksys BEFSR41 Cable/DSL Router and RCA DCM425 Connection issue


hi,
first u configure the modem as bridge. And then u connect the linksys router, wht ever u config u configure in the router. it should work fine.........

Mar 12, 2009 | Linksys Wireless-G WRT54G Router

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Will dcm425 work on playstation 3


Check this thread:

http://www.digitalspy.co.uk/forums/showthread.php?t=555166

Feb 16, 2009 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

1 Answer

How do I connect this router?


You will need at least two ethernet cables like the one that is currently connecting yur PC to your Comcast Modem. Use one cable to connect between your pc and any of the ports labled 1, 2, 3, or 4 on the router. Another ethernet cable should be connected between the modem and the port labeled WAN on the router. Then (if you havent already), turn off the power to all three, the modem, the router, and the pc. then, turn on the power to just the modem and wait until the lights on the front of it stablize (usually about 60 to 120 seconds). Then turn on the router and wait another 60 seconds. Finally, boot up the computer. You should be able to connect to the internet. the next step will be to set up the wireless part of the router.

Feb 14, 2009 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

1 Answer

Is my modem a WiFi router?


This RCA DCM 425 is a cable modem only its not even a router, its just a plain cable modem that is being provided by some cable company like Cox and Comcast, try searching again for a different box there they have a brnad name of Linksys, Netgear or Dlink because those are the common manufacturer of wireless router ...

Hope that helps............

Sep 18, 2008 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

1 Answer

My connection fall


Please describe the leds in front of the modem which led lights or blinking ?

Aug 17, 2007 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

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