Question about Arris Touchstone 450a (CM450) Modem

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Re-starting a ARRIS modem after a loss of power

After the modem lost power, it refuses to re-connect to Timer Warner Cable's network. The little power light is on, but none of the others are. I have tried (a)disconnecting and re-connecting all the cables and (b) resetting the button on the back, but no joy. TWC will come out to "fix" it, but in the meantime I'm without internet and telephone for 5 days.

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Re: Re-starting a ARRIS modem after a loss of power

You can try doing a "Hard reset" on the modem but it looks like you've tried most combinations. To do the hard reset: - unplug the coax cable from the back of the modem - Push and hold the "reset" button in for 15 seconds - Allow the modem 30 seconds to reinitialize and then plug the coax cable back in. Within 10minutes you should have activity back. If not, the modem needs to be replaced. I know you may have tried something similar to this but I'm hoping this may help.

Posted on Aug 13, 2007

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Bought the same identical modem that time warner provides & had them register it.enabled wireless & rebooted modem. wireless disables when you connect time warner says everything is good on their end

The configuration between the modem and your computer requires digital switching via code settings. Check you manual for the proper communication settings.

Mar 30, 2015 | Arris Modems

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Setting up xbox live

ARRIS modem is a phone/hsi modem. What youll need to do is first turn power off on xbox then unplug the power supply from the back of the Arris modem and unscrew the coaxil/cable wire from the back of the modem for about a minute. Then plug in the power cord to the modem wait another half minute then screw in the coaxil/cable wire....wait for the lights to come back on make sure the online light is solid green not flashing and follow the ethernet cable (Looks like a thick telephone wire) and make sure you have that ethernet cable seated/snapped into the ethernet port on your xbox. Then turn the xbox on and do connection test. FINISHED..IF it's still not working make sure you have Internet service from your provider and if using a router bypass it at first see if you can get onto xbox live without the router. If you can with just connected directly to your arris modem without the router involved. If you do want to use wireless contact your router manufacture and or xbox support at 800-469-9269.

Apr 24, 2010 | Arris Touchstone 450a (CM450) Modem

1 Answer

Can't get Arris Touchstone modem on line after moving house. Haven't tried to hook up to (same) ISP for over two months after moving, but I doubt if that is relevant. LED indicators, after power up, show...

There is a filter in the cable line somewhere not letting signal get out- if you know where all the cable lines come together you will probably see a little filter on one side of the splitter- the line going to your arris modem CANNOT be behind the filter.- If you are not aware of where this is- then you will need to call a cable tech to come out and do it for you

Apr 14, 2009 | Arris Touchstone 450a (CM450) Modem

1 Answer

Router cannot connect to the internet.

Turn everything off:
Cable modem unplug the power to the modem if it has a battery remove it.
Router unplug the power to the router
Shutdown any and all computers connected to the router

Turn everything on in this order:
Cable modem wait until all the lights are on but the internet act light
Router wait until the lights goes through it's test cycle and the internet light (wan) is on.
Boot up the computers one at a time after the first computer is fully loaded go to the next computer

Hope this helps


Feb 27, 2009 | Arris Touchstone 450a (CM450) Modem

3 Answers

Switched to cable(arris modem) can't set up network

cable dsl same thing. Did you switch providers and get new modem from them? If so. Just delete previous netowrk and install new one let pc discover new one. Also, with your router you got a disc. It should install correctly. Perhaps it is previous network that is hindering you.

Dec 29, 2008 | Arris Touchstone 450a (CM450) Modem

1 Answer

I cant get out to the internet when I connect the netgear router.

Be sure that your cable company has enabled your internet. Power down the cable modem, power down any routers and computers. Start cable modem first, after internet connectivity is indicated, power up the router (if you have one) and then power upi the pc

Dec 27, 2008 | Arris Touchstone 450a (CM450) Modem

1 Answer

Connecting my arris modem to x-box live

I have an Arris cable modem and use Xbox live. They work very well together. Most ISP's will only allow one active device at a time. When you switch between you cable modem and your Xbox you need to use a pen and press the reset button on the arris every single time you switch.

Jun 22, 2008 | Arris Touchstone 450a (CM450) Modem

2 Answers

Arris cable modem

try shutting of your computer then shutting off the modem, the modems have batteries you might have to remove them theres usally a panel on the bottom, in the back you should have a wire for comcast cable and an ethernet chord telephone too if you have everything. also your modem could be broken, i had the same problem

Jun 06, 2008 | Arris Touchstone 450a (CM450) Modem

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