Overclock.net › Forums › Software, Programming and Coding › Networking & Security › Are those ADSL syncing numbers normal?
New Posts  All Forums:Forum Nav:

Are those ADSL syncing numbers normal?

post #1 of 6
Thread Starter 
The service is supposed to be up to 24Mbps/1Mbps and it's the same (similar) on two different routers of different hardware.


Edited by fateswarm - 10/14/13 at 10:14am
PC
(9 items)
 
  
CPUMotherboardGraphicsRAM
4790K 4.6G 1.24v/1.74v, 5.1G 1.35v validation. GA-Z97X-Gaming 7 Tri-X R9 290 1100/1350 +0.012v G.Skill 2400 c10 
CoolingMonitorPowerCase
Noctua NH-D15 24EA53 IPS 76Hz OC EVGA 1000 G2 Phanteks Enthoo Pro 
Audio
SoundMagic E10 
  hide details  
Reply
PC
(9 items)
 
  
CPUMotherboardGraphicsRAM
4790K 4.6G 1.24v/1.74v, 5.1G 1.35v validation. GA-Z97X-Gaming 7 Tri-X R9 290 1100/1350 +0.012v G.Skill 2400 c10 
CoolingMonitorPowerCase
Noctua NH-D15 24EA53 IPS 76Hz OC EVGA 1000 G2 Phanteks Enthoo Pro 
Audio
SoundMagic E10 
  hide details  
Reply
post #2 of 6
Looks OK to me, DSL speeds are relative to far the the exchange is from you and the quality of the cabling.
24/1 would be attainable for the first 100 meters or so of cable after that it drops off, I have about 500 meters of cable to the exchange and get 16/1 from my 24/1 service.
post #3 of 6
Easy when using MB/sec and mbps in your units...

It looks like the line is only syncing around 10 mbit or so. Based on the CRC it probably can't negotiate higher based on line noise/distance/etc. The attenuation is pretty low which is good but the SNR isn't that great. Any chance on testing against a box/dmarc outside or similar? That might rule out internal wiring issues.
post #4 of 6
Thread Starter 
Quote:
Originally Posted by beers View Post

Easy when using MB/sec and mbps in your units....

oops, lol, I'm usually not that clueless, I first wrote MBit and then tried to turn it to per second and didn't realize just deleting the "it" will make it look like a byte.


I also noticed CRC though it's a statically increasing number, e.g. it has gone to 1998 (from 1954) since I posted this, is it important? (I wasn't downloading anything heavy.)

I doubt I can test it with a different end-point other than the ISP.
PC
(9 items)
 
  
CPUMotherboardGraphicsRAM
4790K 4.6G 1.24v/1.74v, 5.1G 1.35v validation. GA-Z97X-Gaming 7 Tri-X R9 290 1100/1350 +0.012v G.Skill 2400 c10 
CoolingMonitorPowerCase
Noctua NH-D15 24EA53 IPS 76Hz OC EVGA 1000 G2 Phanteks Enthoo Pro 
Audio
SoundMagic E10 
  hide details  
Reply
PC
(9 items)
 
  
CPUMotherboardGraphicsRAM
4790K 4.6G 1.24v/1.74v, 5.1G 1.35v validation. GA-Z97X-Gaming 7 Tri-X R9 290 1100/1350 +0.012v G.Skill 2400 c10 
CoolingMonitorPowerCase
Noctua NH-D15 24EA53 IPS 76Hz OC EVGA 1000 G2 Phanteks Enthoo Pro 
Audio
SoundMagic E10 
  hide details  
Reply
post #5 of 6
No worries tongue.gif

CRC errors generally mean that those particular packets arrived corrupted and are discarded. Theoretically you should be getting none, but it's pretty normal to have a small amount of them on a WAN circuit. As you start to approach the capacity limits of a particular line these start becoming a lot more prevalent.
http://en.wikipedia.org/wiki/Cyclic_redundancy_check#Computation_of_CRC
post #6 of 6
Try with a different phone cable to the wall socket. And avoid routing it too close to power cables and transformers.

With that attenuation is looks like you can't really get a much faster connection. It's pretty high. Ask your ISP if they have a tier that's closer to what you're getting. Most DSL modems have a target SNR that they try to sync the data rate to. The higher the data rate, the lower the SNR, and the lower the SNR, the more unstable your connection will be, and the more CRC errors you will get.
#well
(19 items)
 
Lenovo L530
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Gigabyte Z87X-UD4H XFX Radeon HD 6950 Corsair CMX8GX3M2A2000C9 
Hard DriveHard DriveOptical DriveCooling
Samsung EVO 840 Hitachi HDS722020ALA330 Generic DVD±RW Burner Noctua NH-D14 
OSMonitorMonitorKeyboard
Windows 8.1 Dell U2711 LG W2453 Ducky DK9008 Overclock.net Edition, Cherry MX B... 
PowerCaseMouseMouse Pad
Corsair TX850 Antec Three Hundred Corsair Raptor M40 QPAD HeatoN M 
AudioAudioAudio
E-MU Tracker|pre Beyerdynamic DT-770 250 Ohm AntLion ModMIc 
CPUGraphicsRAMRAM
Intel Ivy Bridge 3210M Intel HD 4000 Graphics Soldered Corsair Vengeance  
Hard DriveOptical DriveOSMonitor
500GB DVD-+RW Windows 7 Professional 1600x900 
  hide details  
Reply
#well
(19 items)
 
Lenovo L530
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Gigabyte Z87X-UD4H XFX Radeon HD 6950 Corsair CMX8GX3M2A2000C9 
Hard DriveHard DriveOptical DriveCooling
Samsung EVO 840 Hitachi HDS722020ALA330 Generic DVD±RW Burner Noctua NH-D14 
OSMonitorMonitorKeyboard
Windows 8.1 Dell U2711 LG W2453 Ducky DK9008 Overclock.net Edition, Cherry MX B... 
PowerCaseMouseMouse Pad
Corsair TX850 Antec Three Hundred Corsair Raptor M40 QPAD HeatoN M 
AudioAudioAudio
E-MU Tracker|pre Beyerdynamic DT-770 250 Ohm AntLion ModMIc 
CPUGraphicsRAMRAM
Intel Ivy Bridge 3210M Intel HD 4000 Graphics Soldered Corsair Vengeance  
Hard DriveOptical DriveOSMonitor
500GB DVD-+RW Windows 7 Professional 1600x900 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Networking & Security
Overclock.net › Forums › Software, Programming and Coding › Networking & Security › Are those ADSL syncing numbers normal?