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Bought new modem and upgraded to Gig - Only get 300Mb

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New Poster

Bought new modem and upgraded to Gig - Only get 300Mb

I was previously on a 70Mb plan, and getting speeds around the 40's, but was having a lot of drops and upload was in the single Mb.

 

I upgraded my service to 1 Gb, bought a new ARRIS T25 modem and was able to get it activated. I never had to call anyone, it just seems to let me self activate on the website.

 

I'm now getting speeds in the 300's Mb at max. I tested both wired to my wifi router and wireless and its similar as long as I am close. My router support gigabit wired and 802.11ac wireless.

 

I have a suspicion that my outside coax is not the highest quality and could be impacting my speed.  I tried viewing the signal noise numbers on my device status but I'm not sure. Can someone who knows more about this verify if I have a problem outside my device that I should have someone look at?

 

 RF Parameters

Downstream QAM

  DCID Freq Power SNR Modulation Octets Correcteds Uncorrectables
Downstream 1 9 513.00 MHz 9.80 dBmV 38.98 dB 256QAM 5467547688 220 1018
Downstream 2 33 663.00 MHz 10.00 dBmV 37.64 dB 256QAM 231485940 71 1037
Downstream 3 34 669.00 MHz 9.60 dBmV 37.64 dB 256QAM 132188130 163 846
Downstream 4 35 675.00 MHz 9.20 dBmV 37.36 dB 256QAM 131928377 812 946
Downstream 5 36 681.00 MHz 9.10 dBmV 37.36 dB 256QAM 132374614 96 889
Downstream 6 5 483.00 MHz 9.20 dBmV 38.61 dB 256QAM 20672185401 87 1085
Downstream 7 6 489.00 MHz 9.60 dBmV 38.61 dB 256QAM 128857788 160 1023
Downstream 8 7 495.00 MHz 9.90 dBmV 38.61 dB 256QAM 128921722 98 1071
Downstream 9 8 507.00 MHz 10.10 dBmV 38.98 dB 256QAM 128588154 88 986
Downstream 10 10 519.00 MHz 9.60 dBmV 38.98 dB 256QAM 152338872 207 815
Downstream 11 11 525.00 MHz 9.50 dBmV 38.61 dB 256QAM 152302981 106 966
Downstream 12 12 531.00 MHz 9.50 dBmV 38.61 dB 256QAM 152285875 146 1014
Downstream 13 13 543.00 MHz 10.30 dBmV 38.98 dB 256QAM 125917574 100 1150
Downstream 14 14 549.00 MHz 10.40 dBmV 38.61 dB 256QAM 129931091 80 1062
Downstream 15 15 555.00 MHz 10.10 dBmV 37.64 dB 256QAM 129951617 115 1119
Downstream 16 16 561.00 MHz 10.00 dBmV 38.61 dB 256QAM 129739659 143 914
Downstream 17 17 567.00 MHz 9.60 dBmV 37.64 dB 256QAM 267401148 79 950
Downstream 18 18 573.00 MHz 9.80 dBmV 38.61 dB 256QAM 133750533 226 874
Downstream 19 19 579.00 MHz 10.00 dBmV 38.61 dB 256QAM 133944607 100 920
Downstream 20 20 585.00 MHz 9.80 dBmV 38.61 dB 256QAM 133737738 51 1051
Downstream 21 21 591.00 MHz 9.40 dBmV 38.61 dB 256QAM 112273831 98 1007
Downstream 22 22 597.00 MHz 9.10 dBmV 37.36 dB 256QAM 112223489 105 908
Downstream 23 23 603.00 MHz 9.30 dBmV 37.64 dB 256QAM 112413338 277 911
Downstream 24 24 609.00 MHz 9.20 dBmV 37.64 dB 256QAM 112196553 94 923
Downstream 25 25 615.00 MHz 9.50 dBmV 37.36 dB 256QAM 108962359 271 2027
Downstream 26 26 621.00 MHz 9.50 dBmV 37.36 dB 256QAM 109052684 186 956
Downstream 27 27 627.00 MHz 9.50 dBmV 37.36 dB 256QAM 108843838 278 854
Downstream 28 28 633.00 MHz 9.40 dBmV 37.64 dB 256QAM 109079300 59 1005
Downstream 29 29 639.00 MHz 8.70 dBmV 37.64 dB 256QAM 105278127 238 1042
Downstream 30 30 645.00 MHz 8.70 dBmV 37.36 dB 256QAM 109478449 183 1084
Downstream 31 31 651.00 MHz 9.30 dBmV 37.36 dB 256QAM 109634246 108 1111
Downstream 32 32 657.00 MHz 9.80 dBmV 37.64 dB 256QAM 109833659 126 907
Reset FEC Counters

Downstream OFDM

  FFT Type Channel Width(MHz) # of Active Subcarriers First Active Subcarrier(MHz) Last Active Subcarrier(MHz) Average RxMER(dB)
Pilot PLC Data
Downstream 2 4K 92 1844 685 778 44 38 38
 

Upstream QAM

  UCID Freq Power Channel Type Symbol Rate Modulation
Upstream 1 4 36.50 MHz 32.00 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM
Upstream 2 5 41.20 MHz 40.00 dBmV DOCSIS2.0 (ATDMA) 1280 kSym/s 64QAM
Upstream 3 3 30.10 MHz 31.50 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM
Upstream 4 2 23.70 MHz 30.50 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM
Upstream 5 1 17.30 MHz 30.00 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM

Upstream OFDM

  FFT Type Channel Width(MHz) # of Active Subcarriers First Active Subcarrier(MHz) Last Active Subcarrier(MHz) Tx Power(dBmV)

 

 Status
System Uptime: 1 d: 14 h: 59 m
Computers Detected: staticCPE(1), dynamicCPE(1)
CM Status: Telephony-DHCP
Time and Date: Sat 2020-06-27 17:32:02

 

 Interface Parameters
Interface Name Provisioned State Speed (Mbps) MAC address
LAN Port 1 Enabled Up 1000 (Full) 14:C0:3E:15:18:F4
LAN Port 2 Enabled Down ----- 14:C0:3E:15:18:F4
CABLE Enabled Up ----- 14:C0:3E:15:18:F5
MTA FailOtherReason Down ----- 14:C0:3E:15:18:F6

 

 Diplexer
  Upstream Range Downstream Range Current Band Setting
Band 0 5 MHz-85 MHz 108 MHz-1002 MHz  
Band 1 5 MHz-42 MHz 108 MHz-1002 MHz X
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Diamond Problem Solver

Re: Bought new modem and upgraded to Gig - Only get 300Mb

4/5 of your upstream channels are a little on the low side.

When you test speeds test right from the modem and not the router like you posted

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Expert

Re: Bought new modem and upgraded to Gig - Only get 300Mb

.@JDL440

 

Just as a FWIW. Considering how high that your downstream power levels are, the upstream power may not be low. It may just be a very clean, low attenuation, and noise free return path / connection. It may be correct for your local system specs. There are spec variances between individual systems. YMMV.



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I am a Customer Expert volunteering my time to help other customers here in the Forums.
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