In reply to a post by jdowning640:

To be honest, I don't have a clue. My laptop turns off at around 3.30am?

Apart from a couple of spikes, things have certainly improved since 4am. I think it is now just a question of monitoring the BQ and identifying what causes the spikes - if that is possible.

Wagstaff

Hi Wagstaff and everyone - thanks for all your replies.

Just got home from work and can now see that once I turned on my Macbook Pro and was browsing the internet for 20 minutes, I checked the Quality Monitor and that site (I think RobertoS mentioned) f8lure.mouselike.org and the maximum latency has spiked up for both.

I'm not downloading anything? Thanks

Jack

In reply to a post by jdowning640:

Just got home from work and can now see that once I turned on my Macbook Pro and was browsing the internet for 20 minutes, I checked the Quality Monitor and that site (I think RobertoS mentioned) f8lure.mouselike.org and the maximum latency has spiked up for both.

Well Jack, I think you've just found the cause of the high latency.
Am I correct in thinking that your "laptop" and your Macbook Pro are one and the same machine: and that is the only machine connected to the line we've been discussing?

Wagstaff

Well there's about six routers plugged into this line. They're just using the internet connection from the main modem (with DHCP off) but I don't think anyone's connected to them as far as I can see from the DHCP table.

We have about 6 IP phones plugged into them as well, but today they were non operation and they were not being used at all. However, when my computer auto-turned off at about 3am this morning, everything seemed to start working again. I'm going to try turn turn the network connections off for 20 minutes and see if it fixes the issue.

Just got home and had a look. As Wagstaff says, we certainly seem to have found the approximate cause . That 4am-8am section is pretty normal. You don't often see any as flat as mine.

These laptops etc. Once you narrow it down a bit more, see if there is any difference running on battery or mains, and when running on battery unplug the power supply from the mains. (Or switch the socket off if it has a switch).

Hi guys,

Thanks for sticking with me here.

So here's the BQM:
http://www.thinkbroadband.com/ping/share/239b8301ea0...

And a picture from f8lure (thanks to whoever posted that!)
http://i56.tinypic.com/2ltn7l1.png

So as we can see - I've switched back over to VoIP however there is still massive delays.

Here is a sample call to my mobile through an IP phone:
http://i54.tinypic.com/2laem34.png

As you can see, the decode latency is 40ms and the Jitter is 1ms (I don't think this is too bad?) however there are still massive delays.

Here is my speedtest.net results:
http://www.speedtest.net/result/1249025359.png

Here is my pingtest.net results:
http://www.pingtest.net/result/38687176.png

So also an issue - whenever you guys run speedtests, how long does it take for you to complete the download? Mine fluctuates in speed and takes about 6 seconds to complete but in all I've seen it should complete immediately? Does that mean that information is trying to get through but it can't?

As you can see whenever there is a VoIP call the maximum latency spikes away up and whenever I'm on the computer it's constantly like that. Should it be?

Plus - whenever I do a traceroute to almost any site... it won't fully trace the route. For example: http://i55.tinypic.com/121c0lx.png
Could this be causing problems? It won't fully trace any site.

Thanks again, Jack.

Edited by deleted (Tue 12-Apr-11 20:35:51)

In reply to a post by jdowning640:

Hi guys,

Thanks for sticking with me here.

So here's the BQM:
http://www.thinkbroadband.com/ping/share/239b8301ea0...

Hi Jack.

I've been looking at your BQM graph from time to time over the past week, and there certainly have been long periods of time when the spikes are almost non-existent.

Are you pretty sure now that the high latency only occurs when you receive a VoIP call?

Wagstaff

Edited by Wagstaff (Tue 12-Apr-11 23:51:02)

In reply to a post by Wagstaff:

I've been looking at your BQM graph from time to time over the past week, and there certainly have been long periods of time when the spikes are almost non-existent.

Are you pretty sure now that the high latency only occurs when you receive a VoIP call?

Wagstaff

Jack. Another few questions:-

1. Do you have an analogue phone attached to each of your routers? If so, what quality of service (QOS) settings do you have on these?
2. Who is your internet telephony provider?
3. If you're sure that the VoIP calls are causing the latency problems, could you start another thread in the VoIP forum, and ask a member of staff to close this one - it has become a bit unwieldy !!

PS. You're download transmission rate looks to be five times higher, so things have definitely improved.

Wagstaff

Hi Wagstaff,

Look at the BQM now - laptop was on for about 5 mins at exactly 8am this morning.

Got home from work at around 4 - I called another internal extension (on a different network) and kept the phone call connected for about 1hr. Still picks up latency.

Answer to your questions:

1) No analogue phones attached. Got 5 VoIP phones and it goes like this (Modem > Gigabit Switch > Router > 100Mbps switch > 5 IP Phones.

2) IP Provider - Gradwell

3) I don't necessarily think it's do with VoIP as computer causes problem aswell.

Thanks again! Jack

BTW: Will put computer on at 9pm tonight exactly.

I've just had a look at your BQM chart - midnight to midnight.
Between midnight and 4pm there were very few spikes, apart from one at around 8.15am, which I think you've identified as switching on the laptop.
There were a lot more spikes between 5pm and midnight. Were you able to associate these with the laptop?

Wagstaff