03-26-2012 04:40 PM
I have used a Motorola sb5100 modem from Comcast for years, long before I signed up for the Triple Play product which includes the installation by Comcast of a sbv5220 modem. I would now like to eliminate the older sb5100 modem from my network, and use sbv5220 modem along with my linksys e4200 router. Let me note that I have used this same linksys e4200 router with the older sb5100 modem for years - both wireless and direct connections - no problems.
Before I started this conversion I plugged my desktop pc into the ethernet slot on the sbv5200 modem to be sure it worked properly. It turns out the modem needed to be properly activated, but once Comcast took care of that issue all was working fine. I then unplugged my desktop pc from the sbv5220 and plugged my router into the sbv5220 - nada, nothing, zilch. No wireless or direct connections. I tried resetting the modem, resetting the router, rebooting the various computers - nothing seems to work.
Now I did come across an article that said the sbv5220 "remembers" the last device that was plugged into the ethernet slot, and it might not like my now changing over to a router - I admittedly did not get understand what was being said.
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03-26-2012 05:32 PM
You need to use the recessed reset button on the rear of the SBV5220 modem while it remains powered on in order to properly reset it. This needs to be done each and every time that you make a change of the device being directly connected to it.
03-26-2012 05:48 PM - edited 03-26-2012 05:48 PM
You know, I tried using the reset button, but I have a feeling I am not pressing it long enough. How long must the reset button be pressed in order to "take" ?
03-26-2012 06:16 PM - edited 03-26-2012 06:41 PM
I'm not certain on that particular device but try holding it in long enough until you see the indicator lights begin to cycle (30 seconds to a minute ?). Alternately, you can remove the built in backup battery while simultaneously having it unplugged from the power source and wait about five minutes.
03-26-2012 08:09 PM
If the reset doesn't work, then were you using both modems at the same time before this? If so, it may be that the SBV5220 was provisioned for phone service ONLY and will not allow High Speed Internet access. In this case, you need to call Comcast and get them to provision the SBV5220 for Internet use as well as phone service.
03-28-2012 10:42 AM - edited 03-28-2012 10:43 AM
Thanks very much for the help. The problem turned out to be my not properly resetting the sbv5220 modem - I was not pressing the reset button for a sufficient amount of time (turned out to be about 45 seconds for me). Once that issue was out of the way, everything worked as expected.
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