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watcher6342
Member
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# Posted: 1 Aug 2009 11:31
i am on comcast and have a scientific atlanta modem which goes to a vonage modem and then to my comp and to a wireless router for my wife and 2 kids comps. can anyone help with why my signal keeps dropping out? do i have something backwards or too many things hooked up OR in the wrong order. i used to have a motorola modem but they said the scientific atl. was better. any suggestions would be very helpful.
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Shnerdly
Moderator
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# Posted: 1 Aug 2009 13:04
Welcome to the forum watcher6342
Please define what you mean by "signal dropping out".
You said you have your computer and the router connected to the Vonage modem. How are you connecting two devices to it.
The correct order should be
Cable Modem to Vonage Modem
Vonage Modem to Router
Router to wired and wireless computers
I don't think that is any part of your problem though
I think your modem will be at http://192.168.100.1
Post the log and signal levels here if your able.
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watcher6342
Member
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# Posted: 2 Aug 2009 05:12
ame
WebSTAR DPC2100
Hardware Version
v1.1
Software Version
v2.0.1r1142-050302(dpc2100-v201r1142-050302a.bin)
Receive Power Level
0.3 dBmV
Transmit Power Level
41.0 dBmV
Cable Modem Status
Operational
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Shnerdly
Moderator
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# Posted: 2 Aug 2009 09:34 - Edited by: Shnerdly
Please define what you mean by "signal dropping out".
Post the log as well
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watcher6342
Member
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# Posted: 2 Aug 2009 19:06
my send light keeps blinking on and off and i sometimes cannot get on the internet. i have an open dns acct. and that speeds it up some but i still have the same problem. you will have to tell me where to find the log, i have no idea how to find it. should i check the drivers for the modem ? if so, would they be on the scientific atlanta website or is there another place to get them updated if necessary.
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Shnerdly
Moderator
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# Posted: 3 Aug 2009 15:13
If you go to http://192.168.100.1 you should be viewing the in formation inside the modem. There is generally a log page that will show any errors it has been experiencing.
The send light on most modems is supposed to blink when there is activity.
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Anonymous
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# Posted: 3 Aug 2009 20:32
it says that the log has not been enabled
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Shnerdly
Moderator
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# Posted: 3 Aug 2009 20:58
See if there is a way to enable it. It may require a restart of the modem.
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Osirus
Member
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# Posted: 20 Aug 2009 20:39
You never said if the drop out is on a wireless pc, wired pc or both...also before you suspect the modem directly connect a wired pc to the modem and run it for lets say a day or so and see if the problem goes away. Your "dropping out" symptom is also a common one for a flaky router.
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uloutofeyeders
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# Posted: 10 Sep 2009 20:09
I have an ongoing problem with my broadband that effects connecting to the internet and my VOIP phone service. Comcast has been no help. Service rep after rep has come out and it still has not been corrected. It is an intermittent problem that does not happen when someone is testing it.
On phone calls, the caller loses my voice, but I can hear them. It usually comes back after about 10 to 15 seconds, but by that time they usually hang up.
I have an RCA modem by comcast. I have changed ALL my cables, bought a new gigabite wireless Cisco modem. No change. My RCA modem lights go out totally then they start the reset process and all is fine, for a while. My cable modem is wired to the Cisco and it is wired to the computer and the VOIP (PhonePower)modem. I have a wireless connection to a laptop and a printer. Everything works well when it works. I am tired of resetting everything, although most times I don't have to, it resets itself. My cable events log is loaded with critical 3 events. DHCP failed. SYNC timing sync failure. REG RSP not received. Received response to Broadcast Maintenance Request,but no Unicast.
Can anyone help?
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Helpdeskguy
Member
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# Posted: 10 Sep 2009 22:39
what are your upstream and downstream power levels?
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uloutofeyeders
Member
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# Posted: 11 Sep 2009 06:30
Just as I said, intermittent problem. It has been working okay. Here are the most recent test numbers
VoIP test statistics
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Jitter: you --> server: 0.8 ms
Jitter: server --> you: 0.0 ms
Packet loss: you --> server: 0.0 %
Packet loss: server --> you: 100.0 %
Packet discards: 0.0 %
Packets out of order: 0.0 %
Estimated MOS score: 3.6
Speed test statistics
---------------------
Download speed: 5200912 bps
Upload speed: 2674744 bps
Download quality of service: 97 %
Upload quality of service: 97 %
Download test type: socket
Upload test type: socket
Maximum TCP delay: 78 ms
Average download pause: 7 ms
Minimum round trip time to server: 89 ms
Average round trip time to server: 90 ms
Estimated download bandwidth: 34400000bps
Route concurrency: 6.6142244
Download TCP forced idle: 83 %
Maximum route speed: 5890784bps
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uloutofeyeders
Member
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# Posted: 11 Sep 2009 14:59
As you can see, it is dropping off from where it was. Still okay for web browsing, not for phone conversation. At times it is much worse
VoIP test statistics
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Jitter: you --> server: 0.9 ms
Jitter: server --> you: 0.0 ms
Packet loss: you --> server: 0.0 %
Packet loss: server --> you: 100.0 %
Packet discards: 0.0 %
Packets out of order: 0.0 %
Estimated MOS score: 3.6
Speed test statistics
---------------------
Download speed: 2965208 bps
Upload speed: 2578280 bps
Download quality of service: 77 %
Upload quality of service: 98 %
Download test type: socket
Upload test type: socket
Maximum TCP delay: 178 ms
Average download pause: 11 ms
Minimum round trip time to server: 94 ms
Average round trip time to server: 95 ms
Estimated download bandwidth: 36800000bps
Route concurrency: 12.410597
Download TCP forced idle: 85 %
Maximum route speed: 5577440bps
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Helpdeskguy
Member
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# Posted: 11 Sep 2009 16:22
im looking for the upstream and downstream power levels from the cable modem
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uloutofeyeders
Member
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# Posted: 11 Sep 2009 22:21
How do I find that?
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Shnerdly
Moderator
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# Posted: 12 Sep 2009 08:21
It would be listed on one of the pages in the modem.
http://192.168.100.1
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uloutofeyeders
Member
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# Posted: 12 Sep 2009 08:43
Could not find anything that said download power level. Just Input Received Signal Strength.
Forward path ranges between 7.6 & 7.9 dBmV
Return path Power Lever: constant at 43.0 dBmV
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Helpdeskguy
Member
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# Posted: 12 Sep 2009 15:21
thats what i was wanting to see, the forward is the downstream and return is the upstream.
your forward seems a bit high with the return at 43 but everything looks ok with those levels.
intermittent problems are difficult to troubleshoot. check these levels as soon as you can after you loose connection agian and let us know if they change. you said you replaced your cables, what about a splitter do you have one of those on the line?
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Helpdeskguy
Member
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# Posted: 12 Sep 2009 15:24
you can go to testmyvoip.com and run a test from you pc also. let us know what kind of results you get.
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Helpdeskguy
Member
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# Posted: 12 Sep 2009 15:26
my bad thats "testyourvoip.com" sorry
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uloutofeyeders
Member
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# Posted: 12 Sep 2009 15:55
Just lost sevice a few minutes, came back just as fast. Checked modem and now it is:
Forward=6.5
Retrun=44.0
Have one splitter and changed it out.
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uloutofeyeders
Member
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# Posted: 12 Sep 2009 16:03
I couldn't get a test run from their web site. This was a message they had.
On the evening of September 14th, 2009, the TestYourVoIP and TestYourVideo services will be shut down forever. It has been our pleasure to provide this free service to all internet users around the world for the past five years. During this time, over one million people have tested their VoIP and IP video services using TYV for a total of over three million test runs. If you found this service useful, we recommend that you contact your broadband carrier and ask for a similar service. The technology behind TYV—the BrixWorx Service Assurance System—is commercially available to Internet Service Providers and Telecommunications Carriers, and is already being used by over one hundred major telecommunications carriers around the world.
For more information on the technology behind the TYV curtain, please visit:
http://www.exfo.com/en/Products/Family.aspx?Id=112
To contact us regarding interest in purchasing the technology, please send your request to:
service.assurance@exfo.com
Best wishes in your pursuit of better VoIP and IP video quality,
EXFO Service Assurance
(formerly Brix Networks)
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Osirus
Member
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# Posted: 12 Sep 2009 17:50 - Edited by: Osirus
Here, use this Broadband Speed Test site. It offers the same tests as above but different server. Once at the site click on Broadband Tools, the two tests you want to run are the TCP Quality Test and the Voip Quality Test. You will need to copy and paste your results here so we can take a look.
Here are my results below:
Speed test statistics
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Download speed: 8890112 bps
Upload speed: 1531232 bps
Download quality of service: 94 %
Upload quality of service: 71 %
Download test type: socket
Upload test type: socket
Maximum TCP delay: 73 ms
Average download pause: 2 ms
Minimum round trip time to server: 47 ms
Average round trip time to server: 53 ms
Estimated download bandwidth: 32800000bps
Route concurrency: 3.6894922
Download TCP forced idle: 71 %
Maximum route speed: 11154888bps
and for the Voip Test:
VoIP test statistics
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Jitter: you --> server: 3.4 ms
Jitter: server --> you: 3.6 ms
Packet loss: you --> server: 0.0 %
Packet loss: server --> you: 0.0 %
Packet discards: 0.0 %
Packets out of order: 0.0 %
Estimated MOS score: 4.0
Graphical analysis : http://174.34.146.20/myspeed/db/report?id=18264
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uloutofeyeders
Member
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# Posted: 13 Sep 2009 07:20
The Thompson Cable Modem Events Log showed that I had 36 critical events between 4:00 PM and 10:00 PM.
Speed test statistics
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Download speed: 5499384 bps
Upload speed: 5252156 bps
Download quality of service: 96 %
Upload quality of service: 99 %
Download test type: socket
Upload test type: socket
Maximum TCP delay: 45 ms
Average download pause: 6 ms
Minimum round trip time to server: 42 ms
Average round trip time to server: 42 ms
Estimated download bandwidth: 36800000bps
Route concurrency: 6.69194922
Download TCP forced idle: 66 %
Maximum route speed: 12484888bps
VoIP test statistics
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Jitter: you --> server: 0.5 ms
Jitter: server --> you: 0.0 ms
Packet loss: you --> server: 0.0 %
Packet loss: server --> you: 100.0 %
Packet discards: 0.0 %
Packets out of order: 0.0 %
Estimated MOS score: 3.6
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uloutofeyeders
Member
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# Posted: 13 Sep 2009 07:30
On the above test I forgot to disable my firewall.
Speed test statistics
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Download speed: 4901284 bps
Upload speed: 5210556 bps
Download quality of service: 71 %
Upload quality of service: 98 %
Download test type: socket
Upload test type: socket
Maximum TCP delay: 83 ms
Average download pause: 6 ms
Minimum round trip time to server: 41 ms
Average round trip time to server: 42 ms
Estimated download bandwidth: 36800000bps
Route concurrency: 7.50894922
Download TCP forced idle: 66 %
Maximum route speed: 12784888bps
VoIP test statistics
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Jitter: you --> server: 0.7 ms
Jitter: server --> you: 3.6 ms
Packet loss: you --> server: 0.0 %
Packet loss: server --> you: 0.0 %
Packet discards: 0.0 %
Packets out of order: 0.0 %
Estimated MOS score: 4.0
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Mike W1MWB
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# Posted: 4 Oct 2009 08:59
Good morning everyone. This is Mike from Wells Maine, ham radio cal W1MWB for any hams out there.  I have home networking from my ISP Time Warner Cable. Something strange has been going on. I run a ham radio program called Echolink and I have many stations usually connected and since last tuesday something strange has been happening.
I restarted my computer to install some software on my new computer which has vista on it. The old one has XP and is dedicated to the VOIP software that logs into Echolink. When I restarted the new computer all my connections went down one after another. I had to turn off both computers and cut power to the whole system for 30 seconds to get everything back. Now when I restart the new computer or disconnect from Echolink on the new computer, all the connections fluctuate - go down and then come back. Additionally, upon entering the ipconfigcommand I get media disconnected even though when I login to my router it shows them both there and I can acess the internet. PLEASE HELP any ideas please email to w1mwb@qsl.net directly. I will bookmark this page also to check back but please email me if anyone has suggestions. It is an AMBIT modem-router.Thanks
Mike
http://w1mwb.no-ip.org
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Osirus
Member
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# Posted: 18 Oct 2009 11:10
uloutofeyeders,
What is your advertised service cap? I'm seeing a pretty decent broadband connection there. You have some QOS issues on the second post but that may not be all that bad if its not constant.
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