nate1234
join:2008-08-21
Moorestown, NJ | reply to akita
Re: SB6120 Provisioning problem
Your signal levels are great!
I wonder if it is a defective modem or something? |
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koshoka
join:2006-12-01
Pottsville, PA | Your upstream level is way to high. |
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nate1234
join:2008-08-21
Moorestown, NJ | Its not way too high, it is within limits. It could still be an issue though. |
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madden2k5
join:2009-04-09
Portsmouth, VA | Nate, no the upstream level of 55 is too high.. withen specs or not its pushing it, and can cause problems at any given time.
As for the 6120, only the link bottom light should blink. the online, and etc lights should be solid. |
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akita
@seagate.com
| Thanks all.
I'm really curious to know whether the online light should be on solid even when the SB6120 is not provisioned. This is important because when I had it hooked up right at the first splitter, before Comcast had the new MAC address, the online was blinking. If it should be on solid even under these conditions, then this is a Comcast issue and not related to my wiring...
The upstream level comes from the modem and not influenced by the wiring/amp in the house, right?
I have tried 2 different SB6120s with Comcast with the same results. On both of my calls, the tech had me transfered to the billing dept. to register the S/N and MAC address. Could my problems be related to an account issue where my Performance tier does not allow the use of the SB6120? Just reaching here... |
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EG
The wings of love
Premium
join:2006-11-18
Union, NJ
1 edit | said by akita :
The upstream level comes from the modem and not influenced by the wiring/amp in the house, right?
Sure it is. It is influenced by excessive overall line attenuation and/or excessive noise ingress into the upstream channel.
Modems will achieve block sync before they are even provisioned provided that the quality of the connection is good. |
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dabulls
@comcast.net | If you hooked it up to where the arris emta is and still have no blocksync then you mostlikely have a defective modem. |
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akita
@comcast.net
| reply to EG
Thanks for all the feedback.
Since my signal is very good with the exception of the marginal upstream power at 55 dBmV, I did another experiment:
Good to hear that the modem does not have to be provisioned to get block sync.
I connected the output of the splitter that normally goes to the Arris modem (as it comes into the garage) and noted that the upstream power level is at 45 dBmV. The downstream power is at 0 dBmV, with SNR of 36 dB. Still no block sync and solid online light. Bottom line: the improved upstream power made no difference.
So even though the 55 dBmV I normally see is not optimum, it should not be the root cause for the SB6120 not being seen by Comcast, right?
dabulls: I don't believe the modem is defective, since I've tried 2 different brand new SB6120s |
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