Poor upstream since move to 20MB

[parky]

I recently upgraded from 10MB to 20MB and the download speeds I am getting are great.

The issue is that when i now use iChat on my Mac I am told that the video and audio quality are poor at the viewers end. This appears to be related to a poor level up upload speed (or variable at least). The download video and audio are great, but the stuff I am sending out is not good enough to use anymore. Before I 'upgraded' I had no such issues.

I have tested the speed and I get the following :-

Download 13.30 Mbps (have seen closer to 20 Mbps at other times)
Upload .44 Mbps (which is not great, but should still cope with the iChat rates used).

Any ideas?

[fatassmichael]

can you post the downstream and upstream power levels from your modem, http://192.168.100.1

do not post your MAC or serial number though.

[parky]

Hope this helps:-

Cable Modem Information
Cable Modem : Euro-DOCSIS 1.0/1.1/2.0 Compliant
MAC Address :
Serial Number :
Boot Code Version : 1.1.2c
Software Version : 2.111.1002
Hardware Version : 1.9

Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 182
Downstream Frequency : 586750000 Hz
Downstream Modulation : QAM64
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : -4.5 dBmV
Downstream SNR : 34.2 dB

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 3
Upstream Frequency : 25808000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 40.0 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Operation Configuration
Network Access : Allowed
Maximum Downstream Data Rate : 20480000
Maximum Upstream Data Rate : 768000
Maximum Upstream Channel Burst : 1600
Maximum Number of CPEs : 1
Modem Capability : Concatenation Enabled, Fragametation Enabled, PHS Disabled

[Peter_]

Downstream Receive Power Level : -4.5 dBmV
Downstream SNR : 34.2 dB


Upstream transmit Power Level : 40.0 dBmV

Your power levels are fine for a 20Mb connection so any issue is either with the network or your equipment and a call to Tech Support 151 from your Virgin Media Phone It's absolutely free or call 0845 454 1111 from any other phone line may help clarify the issue.

[xocemp]

Instead of that copy paste crap Molly, why not post some troubleshooting steps to help define the nature of the issue.

[Peter_]

Instead of that copy paste crap Molly, why not post some troubleshooting steps to help define the nature of the issue.
Your the one speaking it and we cannot diagnose fully as we are only offering advice as the Data Protection Act prevents doing anything further than that.

[xocemp]

Use the Terminal program to ping.

To open terminal:
1) Click on Finder in the dock.
2) Click on Macintosh HD in the window.
3) Click on Applications.
4) Click on Utilies.
5) Double-click on Terminal.
6) Type ping 212.58.253.68

Terminal runs a continuous ping, unlike the Windows command line. To stop the ping, hold down CTRL-C.

Can you also run a trace to 212.58.253.68 from terminal please.*

* no data was disclosed in the running of these tests