Latency/jitter issues - need technical help please

Robscure

Junior Member
Jan 6, 2011
1
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I've been suffering this since I signed up with Virgin Media 20Mb Cable Broadband...

Download speeds seem great, 15mbps-19mbps.... But upload is 0.20mbps-0.60mbps at best.

Ping/Jitter are terrible in games... frequent disconnects...

I've disabled my router's firewall as well as Window's firewall in order to troubleshoot the problem, but it persisted even without firewalls...

Note, every time I changed any settings, I rebooted my computer...

Ruled out

- Firewall
- QoS Packet Scheduler (I've enabled and disabled it)
- Ethernet Controller Advanced Settings
- Coaxial cable location
- Power cables locations
- Modem location
- Modem (an engineer replaced it with a brand new SuperHub today, same issues)
- Antivirus
- Time of day / throttling (same whether 3am or pm)
- Drivers / Firmware
- Ethernet Port (tried both in the back of my pc, performance issues are the same on my wife's laptop via wireless anyways)
- Laptop (I've had the same problems whether the laptop is turned on or off)
- Coaxial condition (I've unplugged and replugged it and changed it about and tried different things, the Engineer said it was fine inside and outside as well)

I've been told by VM representatives the following:

- There's no utilisation problems in my area
- My line quality is fine
- My signal-to-noise (SnR) ratios are fine
- My line's power levels are fine, nothing is wrong with my line at all

I was told by a rep: "We need to arrange for another engineer to call out to take a look at your connection as the amount of T3 timeouts shown is very high."

An engineer came a week later, which was today, and he informed me that he had not been given any prior information about my connection, so he was asking me what was wrong because they never told him anything... So I explained the problem and he said it was too technical for him he didn't know anything about Latency/Jitter or even what they were, and he also didn't know what "T3 timeouts" were.... So I'm back to square one.

What can I possibly do to remove this latency/jitter problem I'm having?
 

imagoon

Diamond Member
Feb 19, 2003
5,199
0
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Sounds like my life with comcast. Post the SNR (upload and download.) T3 time outs are normally a sign of an unstable connection. It sounds like the "engineer" you had sent to you was a cable thrower taught how to hook a magic box up and press test also. when I was a Comcast customer, my modem would do this all day. Retrain 5-20 times an hour dropping all connections for 15-60 seconds, random 8000+ms pings etc.

There is likely something wrong with your line or tap assuming there is no inside wiring issues.