themackDeo Volente
join:2002-07-06
Forest Hill, MD
1 edit | [SunRocket] testyourvoip.com results and what they mean I too have trouble with outgoing voice breaking up. Even when no other uploading is happening! I have comcast std service.. something like 384 up, I guess.
When I run the testyourvoip test, I get a low score.. say 3.1 or lower...
What does it mean? what part of the detailed report do I look at, and what can I change to make it better?
Is it solely my local Comcast problem?
If so, how do I know that? And is there anything "they" can do?
Can Sunrocket adjust something to "correct" for this?
I have tried all the QOS firmwares for my WRT54G..none seem to help for my condition..
I will post a detailed testyourvoip report tonight.
any  help, is appreciated.
Test Details
The information below explains why your call quality score (MOS) was less than perfect.
Find the results that you want more quickly...
Jump to: Media Quality Signaling Quality
MOS Analysis from You TO Boston
Media Quality MOS 2.5 / 5.0
(Best with G.711 is 4.4)
Degradation Sources
Codec 0.58 23.4%
Latency 0.09 3.5%
Packet Discards 0.19 7.9%
Packet Loss 1.60 65.2%
Codec G.711 (PCM at 64kbps,
20ms RTP payload,
80kbps IP BW)
Round-Trip
Latency 199 ms
Packet Discards 0.5%
Packet Loss 4.4%
Loss Periods Min: 20 ms
Avg: 20 ms
Max: 40 ms
Random Loss
Jitter Min: 0 ms
Avg: 9 ms
Max: 47 ms
Signaling Quality Post-Dial Delay 78 ms
Call Setup Time 78 ms
Media Delay 172 ms
MOS Analysis FROM Boston To You
Media Quality MOS 4.4 / 5.0
(Best with G.711 is 4.4)
Degradation Sources
Codec 0.58 93.0%
Latency 0.04 7.0%
Packet Discards 0.00 0.0%
Packet Loss 0.00 0.0%
Codec G.711 (PCM at 64kbps,
20ms RTP payload,
80kbps IP BW)
Round-Trip
Latency 199 ms
Packet Discards 0.0%
Packet Loss 0.0%
Loss Periods Min: 0 ms
Avg: -1 ms
Max: 0 ms
No Loss
Jitter Min: 2 ms
Avg: 22 ms
Max: 60 ms
Signaling Quality Post-Pickup Delay 83 ms
Call Setup Time 74 ms
Media Delay 114 ms
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Comcast cable - I don't have direcway anymore!!
Sunrocket VOIP |
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JTY
join:2004-05-29
Ellensburg, WA | Re: [SunRocket] testyourvoip.com results and what Sounds like a Comcast problem. |
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themackDeo Volente
join:2002-07-06
Forest Hill, MD | reply to themack
Re: [SunRocket] testyourvoip.com results and what they mean anyone know if this looks good or bad? |
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| reply to themack
Re: [SunRocket] testyourvoip.com results and what To me, it looks quite bad...you are having a 5% packet loss. I would imagine that would cause garbled conversation, as well as occasional beeps in the sound (loud digital sounding noises).
Below are my numbers using TW (also with 384k upstream), streaming music to myself at work, connected to a remote desktop session at home, running the same test on my home computer.
The main thing I see different, is packet loss. Not sure what you can do about that, except to say to try and take your SunRocket gizmo to a different connection (DSL or LAN) and see if it improves.
MOS Analysis from You TO Boston
Media Quality MOS 4.3 / 5.0
(Best with G.711 is 4.4)
Degradation Sources
Codec 0.58 82.6%
Latency 0.00 0.0%
Packet Discards 0.12 17.4%
Packet Loss 0.00 0.0%
Codec G.711 (PCM at 64kbps,
20ms RTP payload,
80kbps IP BW)
Round-Trip
Latency 157 ms
Packet Discards 0.9%
Packet Loss 0.0%
Loss Periods Min: 20 ms
Avg: 20 ms
Max: 60 ms
Random Loss
Jitter Min: 0 ms
Avg: 2 ms
Max: 31 ms
Signaling Quality Post-Dial Delay 120 ms
Call Setup Time 130 ms
Media Delay 310 ms |
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 ptrowskiGot Helix?Premium
join:2005-03-14
Putnam, CT
kudos:4
 ·VOIPo
 ·Choice One Commu..
| reply to themack
Re: [SunRocket] testyourvoip.com results and what they mean Packet loss is what could really be a problem for you like Danderson said..this is what I get...
MOS Analysis from You TO Boston
Media Quality MOS 4.2 / 5.0
(Best with G.711 is 4.4)
Degradation Sources
Codec 0.58 73.9%
Latency 0.00 0.0%
Packet Discards 0.20 26.1%
Packet Loss 0.00 0.0%
Codec G.711 (PCM at 64kbps,
20ms RTP payload,
80kbps IP BW)
Round-Trip
Latency 185 ms
Packet Discards 0.9%
Packet Loss 0.0%
Loss Periods Min: 20 ms
Avg: 20 ms
Max: 40 ms
Random Loss
Jitter Min: 0 ms
Avg: 6 ms
Max: 47 ms
Signaling Quality Post-Dial Delay 125 ms
Call Setup Time 141 ms
Media Delay 297 ms
MOS Analysis FROM Boston To You
Media Quality MOS 4.4 / 5.0
(Best with G.711 is 4.4)
Degradation Sources
Codec 0.58 100.0%
Latency 0.00 0.0%
Packet Discards 0.00 0.0%
Packet Loss 0.00 0.0%
Codec G.711 (PCM at 64kbps,
20ms RTP payload,
80kbps IP BW)
Round-Trip
Latency 185 ms
Packet Discards 0.0%
Packet Loss 0.0%
Loss Periods Min: 0 ms
Avg: 0 ms
Max: 0 ms
No Loss
Jitter Min: 4 ms
Avg: 6 ms
Max: 20 ms
Signaling Quality Post-Pickup Delay 132 ms
Call Setup Time 151 ms
Media Delay 173 ms
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Reviews:
·Callcentric
·Future Nine Corp..
| reply to themack
Re: [SunRocket] testyourvoip.com results and what Get pingplotter »www.pingplotter.com/ and set it to ping some sites (best would be UDP pings to SR's RTP server, if they respond). That should help you find your packet loss -- it could be anywhere from a bad cable connection to a hop just in front of SR's server. |
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themackDeo Volente
join:2002-07-06
Forest Hill, MD | this is the pingplotter plot using udp to the sip server of SR..
But I use pingplotter and I have packet loss everywhere along the line...
Any ideas from this? Am I stuck with no VOIP becuase of crappy ISP?
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Comcast cable - I don't have direcway anymore!!Sunrocket VOIP |
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| reply to themack
Is your cable modem on the first tap on the incoming line (not downstream of several splitters)? It should be.
Also, let Comcast know about this -- it is NOT normal, especially with the loss to that first hop (Comcast's router). |
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3 edits | reply to themack
most cable modems have a web server internally. You can use that to look at the RF signal levels upstream and downstream. If one is quite weak, you may get a lot of frame errors which may propagate up as TCP packet errors or garbled/lost UDP/RTP packets.
My TW/RR Motorola cable modem's web server responds to 192.168.100.1:80. If your modem is similar, the downstream (to you) should read 0dBmV plus or minus about 8dB. The upstream should read 40dBmV plus or minus 10dB. I know this well, having struggled for months with my cable company regarding who's at fault for frequent upstream loss of synch.
The downstream signal level is constant and is a function of how many splitters and how many ports per splitter between the cable modem and the incoming service. You should have a two-way splitter as the first on your incoming, with one feed to the cable modem and the other feeding the rest of your home. If you have an amplifier, it must go on the leg for the house, not the cable modem, even if it is a bi-directional amp. I found this out the hard way.
You have to check the upstream level frequently - especially in the Internet busy hours. The upstream signal varies - the cable system head end command your modem as to what power level (dBmV) to transmit. This permits the head end to balance all modems in the system. If your modem upstream is consistently very high, like near the max your modem can produce (see modem spec; mine is about 56dBmV), then you have a problem with interference on the upstream (aka signal ingress). This is a common problem and it's usually bad coax/connector or splitter, wrong wiring (v.s. what I said above), faulty neighbor's modem, and other reasons.
A well trained cable TV tech uses a tester which simulates a modem and transmits a registration sequence the head-end and reports the signal result. Many techs just look at the downstream level (as this is all they have to do for analog TV connections). |
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| When my cable modem went bad I had packet loss on my first hop just like you. Except it was about 75% loss.
It could be your modem starting to go. Just and idea.
Funny thing about my situation was that their support saw nothing wrong with my modem when they logged in. They had a cable guy come and install a new run from the pole, all new splitters, and new boosters. That didn't work so they had the fiber optic box (dont know the term for it) that's on the phone pole replaced(or tested) the next morning. I saw the guy up on the pole when I was leaving for work. That same day I swapped the modem and all was good. They spent a good 8 man hours combined troubleshooting at my home and it was just a bad modem....  |
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themackDeo Volente
join:2002-07-06
Forest Hill, MD | Concerning the cable modem, it was new in nov 2004, SB5100.
Would it go bad already? I know it "could", but a lot of the packet loss is further down the line... can any of that be corrected with a modem? I really don't the answers to this..
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Comcast cable - I don't have direcway anymore!!Sunrocket VOIP |
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 SliderNCMaster Of DisasterPremium
join:2002-12-12
Cornelius, NC | There is no unlimited life to technology and that includes cable modems. Sometimes things just go wrong out of the box.
Why not post a tracert so we can see the packet loss and rule out if it is confined to your provider's network or if it is down the internet off their network. If it is off their network, there is usually nothing that can be done for it unless that backbone provider or whoever's network it is on fixes it.
I know for companies like UUNET and Level3, they have a reporting service where you can let them know about routers that might be having issues.
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Litre is French for give me some f***ing cola before I break vous f***ing lips.
My LiveJournal |
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themackDeo Volente
join:2002-07-06
Forest Hill, MD | I thought the pingplotter image above is a tracert. If it is not, what should I do?
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Comcast cable - I don't have direcway anymore!!Sunrocket VOIP |
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SliderNCMaster Of DisasterPremium
join:2002-12-12
Cornelius, NC | said by themack:I thought the pingplotter image above is a tracert. If it is not, what should I do? Nope, that will work. Sorry I didn't see it. I just scrolled to the end of the thread.
If this was run with UDP packets, then there definitely is some packet loss issues on your network, as well as on the route it takes to get to the IP you traced to. The last IP looks like it's either down or not even accept UDP packets (if you set Pingplotter to use UDP).
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Litre is French for give me some f***ing cola before I break vous f***ing lips.
My LiveJournal |
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themackDeo Volente
join:2002-07-06
Forest Hill, MD | yes I used udp and set it to the sip server for sunrocket.
Is it the majority opinion that it is my internet service and that I would likely have the same problems with any other voip provider that I have with SR? I guess I may have to go back to copper until I can get another choice for internet.
Or until comcast fixes these issues?
I am just trying to determine what to try, different voip or get comcast to give me a better connection.
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Comcast cable - I don't have direcway anymore!!Sunrocket VOIP |
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