New Contributor III
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11 Messages
Speed difference after switching Modems
I currently have the preferred level Internet service. Yesterday i switched from my rented Arris TM602G modem to my own Motorola SB6141 (in preparation of switching to Premier in a few weeks.
All i did was call Cox and give them the customer serial # and HFC MAC ID of the new modem when getting it connected.
Overnight it was updated to (what i assume is) the latest firmware:
Model Name: SB6141
Vendor Name: Motorola
Firmware Name: SB_KOMODO-1.0.6.12-SCM00-NOSH
Boot Version: PSPU-Boot(25CLK) 1.0.12.18m3
Hardware Version: 7.0
Serial Number: XXXXXXXXXXXXXXXXXXXXXXXXXX
Firmware Build Time: Mar 12 2013 17:48:19
below is a screenshot of the signal page
with my preferred tier service (15Mbp down 3Mbps up), a speed test got me ~19Mbps down / 1.9Mbps up
prior to this with the older TM602G, i was able to get ~25Mbps down and 3.2Mbps up
granted that was faster than what i'm technically paying for, but still, i'm just wondering what could cause the newer "better" modem to perform slower than the one im replacing (especially regarding the upstream speed)
thanks for any tips or advice.
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novarit
New Contributor III
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11 Messages
Issue appears resolved after service call. the tech came out and installed a 10db attenuator on the cable line going into the modem. now my signals are more in spec with what they should be
And no more T3 time out errors after the modem reboots. I still notice my speeds are slower than with the DOCSIS 2.0 modem i replaced but the tech said he's seen that before where on the preferred package, the 3.0 modems sometimes dont operate as fast as the 2.0s. but are obviously needed when upgrading to the premier package.
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ChrisL
Former Moderator
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7.1K Messages
The signals being reported by the modem are a bit hot which may need to be addressed. This would also result in the transmit power levels being as low as they're now reported. Ideally we would like to see those minimum 35db.
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novarit
New Contributor III
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11 Messages
what are my options going forward to boost the upstream power? currently the modem is plugged into a cable line that is behind one 3-way splitter attached to the main cable line feeding into the house to give it the most direct path.
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ChaseRankin
New Contributor III
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20 Messages
Your splitter might be giving up on you. Try a direct connection to the wall jack and test it again. You'll have your answer fairly quickly.
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novarit
New Contributor III
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11 Messages
Sorry, what i meant was the line that comes up from the ground outside the house connects to a splitter. from that splitter the modem is directly connected. so in effect, there is only 1 spliiter sitting between the modem and the line that terminates outside my house.
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novarit
New Contributor III
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11 Messages
I should also mention that i noticed in the modem's logs after any reboot i get one T3 time out error:
Code: R02.0
No Ranging Response received - T3 time-out;CM-MAC=XX:XX:XX:XX:XX;CMTS-MAC=XX:XX:XX:XX:XX;CM-QOS=1.1;CM-VER=3.0;
followed by:
Code: D04.1
ToD request sent - No Response received;CM-MAC=XX:XX:XX:XX:XX;CMTS-MAC=XX:XX:XX:XX:XX;CM-QOS=1.1;CM-VER=3.0;
and finally:
Code: I401.0
TLV-11 - unrecognized OID;CM-MAC=XX:XX:XX:XX:XX;CMTS-MAC=XX:XX:XX:XX:XX;CM-QOS=1.1;CM-VER=3.0;
these might not be indications of anything wrong, but figured more info is better than less.
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ChaseRankin
New Contributor III
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20 Messages
Oh man, well with those errors, welcome to the same boat that everyone else is in lol. Umm you seem like you might have a slightly different issue though on top of that. Have you called in and had them reprovision your modem? And have you ensured that the cables aren't loose anywhere? They should probably be torqued to about 8-10 in lb's which is slightly more than finger tight. I may be wrong on that value but in my experience in working with RF that is pretty typical.
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novarit
New Contributor III
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11 Messages
i haven't had them re-provision it as i just got it and had them provision it yesterday. i did ensure all coax cables were properly tightened down on each end.
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novarit
New Contributor III
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11 Messages
chatted with tech support on line and they confirmed the upstream signal is low (tho they didnt seem to have any concern on the downstream values). technician is scheduled to come out and investigate tomorrow.
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novarit
New Contributor III
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11 Messages
TiffanyR,
thanks for following up! yes, my issue was solved after the tech visited. he installed an attenuator on my cable line and that corrected the upstream signal issues i was experiencing. simple 5 min fix! :)
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