20 Most Recent RCA DCM425 DIGITAL CABLE MODEM (RCADCM425) - Page 4 Questions & Answers

There are no drivers to operate the modem as a USB device. Using a crossover cable (one should have come with the modem), you should be able to connect to it via the Ethernet ports on your computer and the modem.

RCA DCM425... | Answered on Sep 25, 2011

My RCA DCM425C from Comcast had the same problem when I came home Saturday, 11/14/09 (coincidentally the same day you posted). Had been working fine - cable TV still works fine including On Demand, etc. The Internet light was blinking. Occasionally I'd see it try to work from one light to three or four, but it always came back to one. Called Comcast, they said their side showed "no signal". Sent out a tech today. He replaced the cable modem, reprovisioned it (I guess if I had a backup ready I could have done the provisioning over the phone maybe?)), everything's great. Lasted about a year and a half. When I logged in via, it said it was still in Step 1 of 5 ("Tuning"), and the logs showed a whole bunch of errors on Saturday that stopped after that. Diagnostics would always freeze the built-in web server and require reboot.

RCA DCM425... | Answered on Sep 19, 2011

not sure really, but you may be able to further investigating here
www.cablemodems.com/downloads/specsheets/RCA DCM425 Digital Cable Modem.pdf

RCA DCM425... | Answered on Sep 13, 2011

If you have the modem already installed and running all you need is a wireless router, you can buy it at any best buy or computer store. If you like to get by internet follow the link:

Choose the one you need. ( a cheap one will be good ). Once you get it, just plug it in and follow instructions on the disc that came with it.
Best regards,

RCA DCM425... | Answered on Sep 10, 2011

While I am no expert it sounds to me like you got a faulty modem. A lot of cable componys will reuse old modems, that where given back after the service was terminated. Sometimes they try and reuse one that was given back because, it was faulty. You can request a new one through your cable provider

RCA DCM425... | Answered on Aug 31, 2011

There's a lot of layers to what can go wrong, generally speaking you should be able to get online if two conditions are met: You are connected to your wireless network, and your modem is assigning an IP address to your router.

Once you know you are connected to your wireless network (you should be able to see the correct network name when you put your mouse over the computer icon in the lower right - assuming you are using Windows), you can generally fix most situations where the modem is not assigning the router an IP address by resetting the devices in the proper order, here's how:

1. Unplug the power cord from both the modem and the router
2. Wait 1 full minute
3. Plug the power back in on the modem
4. Wait for the Cable light to go solid
5. Plug the power back in on the router

This will solve the vast majority of issues. If it does not, double check to make sure the ethernet cord from the modem is going into the proper plug on the router. Usually this is going to be labeled "Internet", "Modem", or "WAN", in stead of a number.

If even this does not resolve the issue, feel free to give your ISP a call. While this may be a problem with the router, most ISP employees are at least willing to do minor preliminary troubleshooting, and will often have access to advanced tools to help them see what the modem can see.

RCA DCM425... | Answered on Aug 27, 2011

If the ONLY light not illuminated is your PC link light then that generally indicates a physical disconnect between the modem and the laptop. If you can get the PC link light to light up when connecting to any other device (computer, router, anything), then you are most likely looking at the ethernet jack on the laptop being burnt out. Otherwise, try swapping the ethernet cord. If a different ethernet cord does not resolve the issue and the PC link light does not come on no matter what the modem is plugged into, you are looking at a faulty ethernet jack on the modem.

RCA DCM425... | Answered on Aug 27, 2011

usually the connection of a router to the modem is made by selecting to get an IP automatically ...and it will do so ..The only issue is to see if the 2 devices not have the same Ip address from factory so that they are not in conflict ..If they have ..just change the one in the router..
The issue is that you didnt managed to make a internet connection directly in the modem either..This is your main concern ..After you make the modem work it will work with the router too cause you do not need much settings if it takes the You will have to enable the wireless so ...and the ports will take IP addresses in order..
Sop ..first see whats wrong with the modem ..If it is a provider preset one ..than remove it from the power plug .,..and plug it back after a while ..and it iwll get back to work ..or call the ISP and see whats wrong ..You will not be able to make it work until you have internet connection in the Wlan port of the router..
here are instructions for connecting a router to a modem ..

RCA DCM425... | Answered on Aug 14, 2011

I have a DCW 725 and the key is 0000000000000000000000001

RCA DCM425... | Answered on Aug 03, 2011

1. try pressing the internet on/off button on the modem.
2. check if the screw on cable is firmly connected on both ends.
3. check all screw on cables going to wall outlet are firmly secured
4. try bypassing any splitters if any

hope the above helps. good luck.

RCA DCM425... | Answered on Jul 27, 2011

You will need 2 ethernet cable to set it up Tha first one will go from the ethernet port in your cable modem to the ethernet port of the router mentionned Modem. The next cable will go fron one of the port of the router to the ethernet port of your Computer,
This second cable is placed temporarely to be able to do set the routers settings,
After this is done insert the Cd that came with your Belkin router and it should guide you through the different setting pages of the router.

RCA DCM425... | Answered on Jul 25, 2011

Use Network preferences to verify your TCP/IP settings and that Built-in Ethernet is your primary network interface. Follow these steps if you are using Mac OS X v10.5:
  1. From the Apple menu, choose System Preferences.
  2. From the View menu, choose Network
  3. Be sure that "Built-in Ethernet" has not the status Inactive listed below the entry in the list of network ports.
  4. Make sure Built-in Ethernet is the selected, or primary, network interface: Click the action button (gear icon) below the list of network port and choose "Set Service Order...".Services can be dragged to change order. Services are listed with descending priority.
  5. Select a network port in the list of port to configure it.
  6. Click Advanced..., then click the TCP/IP tab.
  7. Follow your ISP's instructions for setting up this pane. For more information, see Mac OS X: How to Connect to the Internet With Cable or DSL.
  8. Click OK when finished.
  9. If you have made any changes, click Apply Now.
If you are using Mac OS X 10.4
  1. From the Apple menu, choose System Preferences.
  2. From the View menu, choose Network.
  3. Choose Active Network Ports from the Show pop-up menu.
  4. Be sure that the checkbox for "Built-in Ethernet" is selected.
  5. Drag Built-in Ethernet to the top of the Port Configurations list to make it the preferred, or primary, network interface.
  6. Choose "Built-in Ethernet" from the "Show" pop-up menu.
  7. Click TCP/IP.
  8. Follow your ISP's instructions for setting up this pane. For more information, see Mac OS X: How to Connect to the Internet With Cable or DSL.
  9. If you have made any changes, click Apply Now.

RCA DCM425... | Answered on Jul 11, 2011

> open a port on the RCA digital cable-modem

This device has no "ports" -- all the traffic goes right through out, unfiltered & unblocked.

Connect your computer directly to the Ethernet port on the cable-modem
Configure the Windows Firewall to "open" any port(s).

RCA DCM425... | Answered on Jun 27, 2011

1) Make sure the cable is plugged into the Internet port (or whatever the appropriate port is, since you didn't specify exactly which router).

2) At your router's configuration page, make sure DHCP (Automatic) is selected.

3) After connecting to the router, if it still does not work, open up the command window by going to the search box in the Start Menu or click Run... and type "cmd".

4) Type "ipconfig /release". Wait until this is finished.

5) Type "ipconfig /renew". Wait until this is finished.
This should have given you an IP Address.

6) Try to connect to a website.

RCA DCM425... | Answered on Jun 04, 2011

first click start in the computer then click run then type CMD then the dos modebox will be seen then type ipconfig then you will see ip adress of the network to which you are connected then type ping the ip address if the pinging is ok then your laptop is comunication with the router if no pininging or ip adress right click my computer then click properties then hardware then device manager and check wether the network adaptor is marked if marked reinstall the driver and restart the computer

RCA DCM425... | Answered on Jun 02, 2011

I would do a factory reset on the modem, there should be a red or white reset button of the back on it, Just push the button down with a paper clip or something and hold it down for 10 seconds and release. This should completely reset the modem to factory settings, if it is a internal hardware problem then the issue is should be handled by the manufacture i dont recommend opening a cable modem. Changing the power cable is were i would start if the reset fails.
hope this helps, feel free to reply with any questions.

RCA DCM425... | Answered on Jun 02, 2011

Hi, carm243. Thanks for your question.
It sounds like your modem needs to be reset. You want to unplug the AC cord from the back of the modem, wait 15 seconds, plug it back in, and restart your computer so that it can obtain the new information from your modem. Watch the lights on your modem. You want to make sure that the "Internet" light blinks while the modem restarts, but goes steady after you restart the modem.
As long as your modem is functional, that should resolve the problem. If this does not solve the problem, get in touch with your internet provider and, assuming you are renting the modem from them, ask them to send a replacement.
Best of luck!

RCA DCM425... | Answered on May 21, 2011

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