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help - slow upload speed

C

Cooky

Golden Member
hello all,
I've got 4 PCs, 1 4-port router, and a Comcast/Scientific Atlanta cable modem.
Ever since I got Comcast cable modem 2 weeks ago, the download speed has been real fast (2+Mbps) but the upload is rediculously slow (5-10kbps), which is way lower than the advertised 256kbps. The measured speed come from PCPitstop and dslreports.

Before I moved to Pittsburgh I had RoadRunner in upstate NY and the speed was normal and I've tried going directly from PC to modem so the router is ruled out to be the cause.
I've also tried a different PC and resetting the modem and renewing IP - didn't work. I doubt it's a worm trying to spread itself cause I update my virus definition every 3 - 5 days.

Called Comcast and the tech on phone couldn't help me; he said it's my wiring. If that's the case, how come my download is fine??
Any of you have any suggestions or similar experience??
 
tell them to fix it then. sometimes there's things in the wiring or mix that affect the return signal (your upload)
 
tell them to fix it then.
Click to expand...
Ok here's the ridiculous part: I asked a tech to be sent to my place and fix it, and the guy on the phone said if the tech doesn't find anything wrong w/ Comcast's equipment (cable goes to my house and the modem), I'll be charged $50. So if it's the wiring in my house, or anything that's wrong in my part, I'll be charged $50!!
So I'm trying to figure out what's wrong first...
 
The tech could be right, it could be your wiring. In my area, upload occurs on channel 108 (I forget what frequency that is) and this channel tends to have significantly lower signal than the channels that techs usually measure (ideally 10dB lower than channel 73). Bad wiring will cause the signal on high channels to drop off even quicker. Have a tech come out and measure your signal on the upload channel. If it is low, have then replace fittings, splitters, and/or wiring. If the signal is not low, ask if they use different brands of cable modems (most do. In my area they use 3com, surfboards, teryon, and toshiba.) Ask for a Toshiba modem! They are the best in my experience.
 
Originally posted by: Cooky
tell them to fix it then.
Click to expand...
Ok here's the ridiculous part: I asked a tech to be sent to my place and fix it, and the guy on the phone said if the tech doesn't find anything wrong w/ Comcast's equipment (cable goes to my house and the modem), I'll be charged $50. So if it's the wiring in my house, or anything that's wrong in my part, I'll be charged $50!!
So I'm trying to figure out what's wrong first...
Click to expand...

Did the tech install a new outlet in your home when he installed the modem, or did he use an existing outlet?
 
The tech who installed the modem used an existing outlet. I saw him do a test on signal strength so I guess it's within acceptable range otherwise he wouldn't have installed it....or would he??
 
Originally posted by: Cooky
The tech who installed the modem used an existing outlet. I saw him do a test on signal strength so I guess it's within acceptable range otherwise he wouldn't have installed it....or would he??
Click to expand...

Most techs would rather run from a job if the modem is "working", rather than crawl through your attic pulling cable because the signal is a little low.

Here is the key question: Did he offer to install a new outlet? The policy here in central florida states that the tech is required to install a NEW outlet for the cable modem. Time Warner (Brighthouse) will guarentee that outlet from any future problems and will replace for free. Now, if the tech offers to install a new outlet, and you decline, then they aren't responsible for the line are charge you $50 if you have problems later.
You need to find out exactly what their policy is in your area. If he was supposed to offer you a new outlet during installation and he didn't, then you better let them know. Most people aren't aware that they are entitled to a new outlet, and a tech won't mention anything if he senses he can get away with it.

This could all be entirely untrue in your area, so find out for sure, in person if possible.
 
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