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Optimus2357
Premium
join:2010-11-21
West Warwick, RI
kudos:3

1 edit

[RI] Indoor drop and eMTA

So recently while troubleshooting an internet issue (that I later found out to be a outage) I noticed two things:

1. My Rx is low going into my tap, at about -5 at the dmark. This is with the RG-11/U going direct into the modem. I live in a apartment building with visible overhead racks in the hallway for the wiring. Because of this, I have been able to find the problem seems to be that I am the furthest drop away from the Telcom closet. Would it be possible to get my drop run from the closer Telcom closest? If so, who's responsibility is this?

2. I was also looking to possibly replace my separate D3 internet modem and D2 eMTA with one D3 eMTA. What is the model of choice in RI and has anyone seen any issues going this route as far as performance goes? The reason I may go this route is if the drop can't be replaced at least I can swap the 3 way splitter with a 2 way splitter and that should increase my levels by 3.5db. Not best case scenario, but I'm thinking it could at least be a work around.

**Update** Here are my signal levels now before the trouble call scheduled today. This is from the drop, though a coupler bought at a Cox store, on a about 20' run wallfished to a outlet. They seem to be simular to what I was told my eMTA was getting direct to the modem, but since the ethernet port is broke, I can't confirm that.

Acquire Downstream Channel843000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
Configuration FileOK122001_vm2.0_d.cfg
SecurityEnabledBPI+
 
Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
1LockedQAM2562843000000 Hz-3.8 dBmV38.7 dB00
2LockedQAM2561837000000 Hz-3.7 dBmV38.2 dB00
3LockedQAM2563849000000 Hz-4.4 dBmV37.5 dB00
4LockedQAM2564855000000 Hz-4.6 dBmV37.6 dB00
5LockedQAM2569867000000 Hz-5.5 dBmV37.0 dB00
6LockedQAM25610873000000 Hz-6.1 dBmV36.7 dB00
7LockedQAM25611879000000 Hz-5.9 dBmV36.4 dB00
8LockedQAM25612885000000 Hz-6.4 dBmV36.0 dB00
 
CorrectablesUncorrectables
00
 
Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA22560 Ksym/sec37000000 Hz41.5 dBmV
2LockedATDMA35120 Ksym/sec32000000 Hz41.5 dBmV
3LockedATDMA45120 Ksym/sec25400000 Hz41.5 dBmV
4Not LockedUnknown40 Ksym/sec0 Hz 0.0 dBmV
 
CM IP AddressDurationExpires
10.2.121.109D: 01 H: 00 M: 00 S: 00Wed Jul 24 13:17:15 2013] 
 


Anonguy

@cox.net
1. Are there drops going into the closer closet? Cox may not have taps in there. And Cox would be the responsible party more than likely since it is your drop.
How much closer is it?

2. I use a Cisco DPQ3212 for voice and Data. Works fine. Have had it for a couple years now. You should be able to go to your local Cox Store and swap the D2 EMTA for a D3 EMTA. Cox does that here. After you swap it and get it hooked up just call Cox and ask them to move your Internet from your modem to the EMTA.


Optimus2357
Premium
join:2010-11-21
West Warwick, RI
kudos:3
1. A rough estimate is the closest in use now is about 150-200' while the other closet is 50-100'. However even though the racks head that way, they don't actually meet up anywhere so I don't think it would be possible. Not without some messy drilling.So that creates the question is it normal to have -5 on a 150-200 drop of RG-11? A quick google search shows a loss of 3.37-4.43db per 100feet in the 843Mhz Frequency. Thats between 7-8db loss. Whats the best way to work with that to get the best possible signal to my apartment? How hot can they make it at the tap?

2.How stable is the firmware? Are the diagnostics locked down like the DPC3010? Im not a fan of Cisco equipment, is there any available Motorola D3 emta's?

Thank you for the reply.

Beezel

join:2008-12-15
Las Vegas, NV
said by Optimus2357:

1. A rough estimate is the closest in use now is about 150-200' while the other closet is 50-100'. However even though the racks head that way, they don't actually meet up anywhere so I don't think it would be possible. Not without some messy drilling.So that creates the question is it normal to have -5 on a 150-200 drop of RG-11? A quick google search shows a loss of 3.37-4.43db per 100feet in the 843Mhz Frequency. Thats between 7-8db loss. Whats the best way to work with that to get the best possible signal to my apartment? How hot can they make it at the tap?

2.How stable is the firmware? Are the diagnostics locked down like the DPC3010? Im not a fan of Cisco equipment, is there any available Motorola D3 emta's?

Thank you for the reply.

It is a DPC3010 except they added phone service and a battery backup to it. It is just a little bigger than the 3010. But has the same stability and performance and locked down diagnostics.

Not sure if they support any Moto emta's.


Optimus2357
Premium
join:2010-11-21
West Warwick, RI
kudos:3

1 edit
Yea, thats what I was afraid of. I might just swap it for another of the same type, a Arris TM602. I guess I will just go to the Cox store and see what they have. Either way I need one with a working ethernet jack so I can check signal levels. Even the Cisco eMTA should have that. I will update with what I find.

::Update:: Turns out you can't swap a eMTA at a retail location, atleast where I am. I should have known that but got caught up in the technical aspects. I have called and made appointment for Cox to take a look.


Optimus2357
Premium
join:2010-11-21
West Warwick, RI
kudos:3
reply to Optimus2357
Had the tech over and he was very nice and extremely helpful. First he informed me that it seems, at least in my area, that they had blocked the 192.168.100.1 diagnostic page from eMTA. I was told it was done to protect against unauthorized access, either by user or someone attempting to gain control of the eMTA remotely via ethernet. The reason seems valid, and it is Cox equipment with Cox controlled firmware, so while I have no complaint, I was slightly disappointed. At the least, you think they could just lock down everything but the signal diagnostics like they/Cisco did with the DPC3010, but perhaps that was not possible with the more complicated eMTA firmware. He swapped out the ArrisTM602 for a Cisco DPQ3212, and actually it fixed a slight buzzing I always thought was my phone. Seem like a much louder and clearer tone. The new eMTA also had it's diagnostics blocked too, so that seems to support previous statements.

As for the signal problem, first we decided to go from a 3way to a 2way splitter so that bump my levels up 3.5db but a filter had to be put on to block the cable signal (which I don't subscribe to) which unfortunately brought it down about 5db, leaving us below what we had before. Luckily he had a very nice amp that has no loss on the return, and actually seemed to improve my DS SNR, and showed great performance. I am usually hesitant about amps, having had problems with them in the past, but he seemed confident so I will keep a open mind. New signal levels below, will do final update in 1 weeks to see if the amp causes any T3 or anything. Overall a wonderful customer experience. A+

ProcedureStatusComment
Acquire Downstream Channel837000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
Configuration FileOK122001_vm2.0_d.cfg
SecurityEnabledBPI+
 
Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
1LockedQAM2561837000000 Hz 2.7 dBmV41.4 dB00
2LockedQAM2562843000000 Hz 2.6 dBmV41.4 dB00
3LockedQAM2563849000000 Hz 1.9 dBmV40.8 dB00
4LockedQAM2564855000000 Hz 1.7 dBmV40.9 dB00
5LockedQAM2569867000000 Hz 0.6 dBmV40.4 dB00
6LockedQAM25610873000000 Hz-0.1 dBmV40.4 dB00
7LockedQAM25611879000000 Hz 0.3 dBmV40.0 dB00
8LockedQAM25612885000000 Hz-0.2 dBmV40.4 dB00
 
CorrectablesUncorrectables
00
 
Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA22560 Ksym/sec37000000 Hz49.7 dBmV
2LockedATDMA35120 Ksym/sec32000000 Hz49.7 dBmV
3LockedATDMA45120 Ksym/sec25400000 Hz49.7 dBmV
4Not LockedUnknown40 Ksym/sec0 Hz 0.0 dBmV
 
CM IP AddressDurationExpires
10.2.121.109D: 01 H: 00 M: 00 S: 00Wed Jul 24 15:59:05 2013