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Forums » Equipment Support » Hardware By Brand » Motorola » Upgrade SB5120 to SB5101 Problems
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SB51XX...different models...where can I find the differences »
AuthorAll Replies


NoVA_CoxUser
Stand back from the cage -- The RF bites
Premium
join:2004-07-06
Alexandria, VA
·Cox HSI

reply to fuzzdawg7
Re: Upgrade SB5120 to SB5101 Problems

Your issue is that your modem is having to transmit WAY outside of the DOCSIS specs. (the 61 db upstream)

For some reason your ISPs headend cant "hear" your modem.

Could be wiring issues inside your house, or cable plant problems outside.

Do you possibly have an amp inside your house (w/o upstream amplification)?
to forum · permalink · · 2009-05-02 10:28:18 · Reply to this

fuzzdawg7

join:2006-10-01
Silverdale, WA

 I don't think I have an amplifier inside my house - how would I know?

The community I live in has pretty old cable wiring, so it could be the entire community - I snooped on my neighbor's modem and it was sending at 55 dbmV, so I'm leaning toward a site wide issue.
to forum · permalink · · 2009-05-02 18:24:45 · Reply to this


NoVA_CoxUser
Stand back from the cage -- The RF bites
Premium
join:2004-07-06
Alexandria, VA
·Cox HSI
said by fuzzdawg7 See Profile :

... I snooped on my neighbor's modem and it was sending at 55 dbmV, so I'm leaning toward a site wide issue ...
A distinct possibility. Just keep "pounding" on your cableco to correct your too high upstream.

You are Tx'ing WAY above maximum the DOCSIS spec; something they can't (or at least shouldn't) ignore.
to forum · permalink · · 2009-05-03 07:41:31 · Reply to this

yuhuang

join:2009-03-27
said by NoVA_CoxUser See Profile :

said by fuzzdawg7 See Profile :

... I snooped on my neighbor's modem and it was sending at 55 dbmV, so I'm leaning toward a site wide issue ...
A distinct possibility. Just keep "pounding" on your cableco to correct your too high upstream.

You are Tx'ing WAY above maximum the DOCSIS spec; something they can't (or at least shouldn't) ignore.
to forum · permalink · · 2009-05-03 10:37:50 · Reply to this
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Forums » Equipment Support » Hardware By Brand » MotorolaSB51XX...different models...where can I find the differences »

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