The blinking light (assuming it's the one labeled "cable") means the
modem is attempting to obtain block-synch with the CMTS (or "master"
cable modem located at the headend). There are numerous possibilities
as to why it doesn't work. You can be sure, though, that when that
light is blinking your service won't ever work.
When the techs show up, you might want to ask what brand CMTS is in use.
There is a lot of flack about the 3Com CMTS systems (some time ago
ones from Cisco). In my area (State College, PA), the local techs are
attributing my problems to the 3Com CMTS. Please post a follow-up as to
Of course the line techs did their best and 'shot the line' from my drop
back to the headend, and
it was fine (<1/2dbmv) loss, so it wasn't a cable drop issue.
After 1 week of this, it finally started working after I insisted to be
transferred up to a
office can't even get their own
service, imagine that!!!)
3 weeks and counting, working just fine...
> >Have tci(att) at home for about a month and now for 30-hours have had just
> >a blinking light on the cable light. Have tried unplugging, resetting etc
> >but cant get the cable-modem to sync again. Any one have any ideas. Tech
> >support to be here in several days. Didn't really believe all the stories
> >service at all. and only a month into the service.
> month. Then, began to regularly lose sync - on a few hours then off.
> About 6 calls to tech support later, still the same. Brought out a new
> RCA modem, right! We don't oversell. right! They're really clueless.
> Next appointment a week from now.
> Sigh...it was good while it lasted
Now, about six hours later, I'm hooked up to my work's RAS via analog modem
reading this thread of news and the damn thing is working! I just started
reading the thread and BAM! I have cable. Heh... Time to restart the "Oh
I've found a pretty good way to make my RCA modem activity
light flash continuously: I just start up my PC!
Here is the setup: 3 PCs and 1 Mac on a 5-port Hub.
Cable modem on uplink port (port 1 cannot be used).
The Mac runs IPNetrouter to do NAT so the PC's can
connect to the net. The PCs have file and print sharing
enabled using NETBEUI protocol (nothing bound to TCP/IP).
All the PCs have 192.168.0.xx addresses. The Mac masquerades
at 192.168.0.1 and is set as the gateway in the PC setup.
Internet access from Mac and PCs works without problems.
(and the security checks show no vulnerabilities for the PCs).
Whenever I start up one of the PCs, it does something that
makes the cable modem activity light flash continuously. There is
no data transfer to the hub. The activity goes away (for a while)
if I reset the cable modem. However the trigger from the PC
apparently can happen at other times that at startup.
This wouldn't bug me a lot, except whatever activity is going
on seems to reduce my download rate by about 1/2. I guess
my incoming packets have to compete with whatever is happening
continuously. I think I will put Zone alarm on one of the PCs
and see if it catches the outgoing packet that triggers
Anyone have any guesses about what is going on??