Question about RCA Thomson Digital Cable Modem (DCM305R)

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DHG535-2 and LAN switch issue

I signed up for Comcast Digital Voice, and they came and replaced my Linksys cable modem with a Thomson RCA DHG535-2 modem. Now, only one computer at a time can connect to the Internet. My network is connected to the modem through a D-Link 5 port ethernet switch. Any ideas are useful. Thanks!

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  • 83 Answers

It sounds like the LInksys that they replaced was also a router. A router will route packets to multiple pc's that are connected to it. The cable modem just sees the router as 1 pc. When you use a switch, the cable modem will see all of your PC's. and Comcast just allows 1 pc. You will need to buy a router to use more than 1 PC which will be cheaper than using Comcasts Home Networking service which will network up to 4 pcs

Posted on May 30, 2009

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Posted on Jan 02, 2017

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1 Answer

I have a DHG536C Cable modem from Comcast Does is have an internal router so I can use a simple Eithernet switch or hup to connect 2 computers or do I need to use an external router?


The DHG536C is a pure cable modem. You will have to purchase a router to establish a network with the two computers. Alternatively you could connect one PC to the modem and have a peer to peer LAN network between the two pcs. The PC connected to the cable modem will need to be on all the time. You will need a wireless or a LAN card for each of the 2 computers.

If you wnat to buy a separate router you can select something from this site.

Dec 06, 2010 | RCA Thomson Digital Cable Modem (DCM305R)

1 Answer

I have a DHG536C Cable modem from Comcast. I am using a Linksys Switch, EZS88W, and the modem can see one computer but nothing eles, what is wrong?


Have you connected all computers, then switched off the switch and modem. now switch off your computers.
If you then power everything up, it should detect the computers, and assign them the correct IP addresses.
If your still having problems, you may need to assign static ip addresses (google for instructions for your computers/switch)

Sep 14, 2010 | RCA Thomson Digital Cable Modem (DCM305R)

1 Answer

RCA Thomson digital cable modem internet light is flashing and no connectivity. Is it the modem or the internet service? Comcast was less than helpful...


looking at the internal modem page.usually:192.168.100.1. on your browser.explorer works best for this look up. you dont need internet access for this. once inside you can look at signal strength coming from the street and signal going back. if its out of spec.then that needs to be corrected. Note :call your provider and ask for down/up stream
specifications. also weather or not your modem is ( EOL) End of life.
Good Luck.

Mar 27, 2010 | RCA Thomson Digital Cable Modem (DCM305R)

2 Answers

Thomson rca cable modem dhg 535-2


Here is the usb driver it is directly from the disc for the Thompson 535-2 cable/voice modem. I know this is not on the internet anywhere so please share.


http://rapidshare.com/files/303844631/RCAThompson535usbdriver.rar.html

Jun 24, 2009 | RCA Thomson Digital Cable Modem (DCM305R)

1 Answer

I have A thomson rca dhg535 from comcast.I disconnected the box to move it.After I reconnected it, all the lights came on,but the link light keeps blinking


There is a reset button on the back accessible only by a pen or paper clip. the dhg535 has an internal battery and needs to be reset every time the connection changes or is removed.

Apr 07, 2009 | RCA Thomson Digital Cable Modem (DCM305R)

1 Answer

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Check this thread:

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

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1 Answer

Reseting "Bridge mode" in RCA DCM 305R cabel modem


you can't set teh modem to bridge mode, however, you can set the router to bridge.
The linksys should have bridge mode configuration in the uer guide.

connected the 2 router together
configure the IP address of the liksys to be inthe same subnet as the moem, but out of the range of the DHCP of the modem. ie. DHCP address 192.168.0.2 through 192.169.0.100, the linksys should have the IP address as 192.168.0.200
disable the DHCP on the linksys
setup the wirless just the way you would if ti was the modem.
connect from the modem LAN port to the LAN port on thelinksys. leave the WAN port open.

Dec 30, 2008 | RCA Thomson Digital Cable Modem (DCM305R)

1 Answer

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NOTHING.
turn off all equipments.
connected the modem to the incoming cable.
use the CAT-5 cable comes with unit, conencted from the one of LAN port to your PC LAN port on the rear panel. turn on the modem then turn on the PC.
you are good to go.

Dec 18, 2008 | RCA Thomson Digital Cable Modem (DCM305R)

1 Answer

Can't get modem to work if I use the USB connection


Your computer is attempting to find the network connection through your LAN port. Your best bet is to reconfigure your network settings to seek its external network connection through USB, or better still, obtain a router(I personally recommend linksys wireless/basic routers due to stability), and simply use the ethernet connection through it. While this is bypassing the initial issue, it is also saving yourself a lot of hassle when it comes to retooling the PC's settings on the USB connection.

Jun 04, 2007 | RCA Thomson Digital Cable Modem (DCM305R)

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