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tplink Posted:
Im trying to add
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DWSupport Posted:
After recent
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peterlee Posted:
Had a call from a
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Ontario to my home
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rio
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TELLDOUG Posted:
I am looking for a
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On Oct 26, 2016 at 09:21:30

HildBeft Posted:
You can recollect
password by
connecting the
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and open the
browser
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On Oct 20, 2016 at 05:05:49

HildBeft Posted:
Great tips..
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massrman Posted:
The devices are
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margins , please
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On Sep 30, 2016 at 00:48:03

massrman Posted:
Hi these are most
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configuration
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On Sep 30, 2016 at 00:37:45

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Has anyone setup a
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On Aug 30, 2016 at 10:38:01

James44 Posted:
Hi, I am
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Jason98036
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Joined: Aug 15, 2005
Posts: 5

PostPosted: Tue Aug 16, 2005 7:09 am    Post subject: Issue w/ RT31P2 on Comcast and internet performance / drops Reply with quote Back to top

I've had my Vonage service sinse Nov 2004. All worked fine until last month.

My connection is via an RT31P2 (purchased at Fry's) and a Comcast supplied RCA cable modem. Connection speed rated at 4Mbps down / 384 Kbps up.

It started with a problem where when I received an incoming call, my internet connection on my computer suddenly slowed to dial-up speed or worse. The only way to restore the original speed was either to power cycle the router and cable modem, or to do a DHCP release/renew. Even once restored, the download speed now only goes up to 2.6Mbps; until last month the actual performance was closer to 3.5 Mbps.

As of last week, the problem became more severe. Audio on the phone, assuming the other party can hear me at all, is choppy with static. Worse, the internet connection drops frequently, requiring the modem to re-establish the connection. At first, I thought the cable modem was going out; but removing the router from the loop results in a stable connection for the computer. When the router is re-inserted, the dropped connections begin to occur again which is making me wonder if the router is doing reboots (I've seen some other posts on the reboot issue, but nothing that looked directly comparable - sorry if I missed it).

Any suggestions on troubleshooting / resolution would be greatly appreciated.
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jack2u
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Joined: Jul 26, 2005
Posts: 28
Location: Texas

PostPosted: Tue Aug 16, 2005 9:50 am    Post subject: Reply with quote Back to top

Jason,

Have you considered that the problem may be with Comcast? I was a Comcast subscriber for the past six years, and noticed a maked performance degradation over the past six months. I started with Vonage last month while still on Comcast and had very unreliable telephone service for the week or so I remained on Comcast until switching over to Verizon FiOS. Now on Verizon my all around performance is rock solid so far. As I understand it, Comcast provides "shared service" and depending upon how many subscribers are on line in your area you can see some real degradation of bandwidth. In my case there were times I could not even get on the internet. If you haven't already tried testing your speeds without the RT31P2 router, that might be a good place to start.

_________________
Everyone is born with genius, but most people only keep it a few minutes….
Jack - Flower Mound, Texas
Vonage User Since: July 25, 2005
ISP: Verizon FiOS - 5Mb/2Mb
Vonage Hardware: Linksys RT31P2-VD
Linksys WRT54G
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mundy5
Member of the Week
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Joined: Feb 28, 2005
Posts: 1179

PostPosted: Tue Aug 16, 2005 9:57 am    Post subject: Reply with quote Back to top

Jason,

I tend to concur with Jack2u on this one. I am a comcast subscriber and they have had their network issues lately. I was having dropped connections consistently for two weeks. It turns out that many in the Chicago area were experiencing the same thing even though their CS people claimed there was no network issue to report.

One suggestion is to lower your bandwidth usage on Vonage. Go to the website www.vonage.com and login. Go to Features and then select Bandwidth Saver. First try lowering it to 50kbps which is still better quality than your local service. If it still causes issues then try lowering it 30kbps which is equivalent to your local service.

It has helped me. One thing you have to realize is that the speeds rated by Comcast are up to 4 mbps/384kbps. In other words, they top out at those speeds. I have no better than 3.5 mbps down at any time of the day.

_________________
St. Louis, MO
Vonage Customer from February 2005 to May 2010
ISP: Charter
Router: Linksys RT31P2 (blew up during electrical storm)
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Jason98036
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Joined: Aug 15, 2005
Posts: 5

PostPosted: Tue Aug 16, 2005 10:27 am    Post subject: Reply with quote Back to top

Thank you for the replies. However, I still need suggestions on the Voip issues. I agree that Comcast is likely to blame for the drop in performance from 3.5Mbps down to 2.6Mbps (I understand that 4Mbps is just 'maximum', and the shared service impacts at peak times), but that doesn't address the main problems being experienced.

As I mentioned, I tested the connection without the RT31P2. With my computer connected directly to the cable modem, no problems. The connection remained stable and never slowed to dial-up speeds. As soon as I add the RT31P2 router back into the loop, I experience service disconnects, calls are choppy if they can hear me at all, and once I receive an incoming call my computer drops to dial-up equivalent speeds.

I've already tried lowering the Voip bandwidth usage to 50Kbps, will try adjusting it down to 30Kbps to see if that helps. I'm also looking at improving the ventilation around the router in case heat is an issue; it's not outrageously warm in that room, but I'll monitor it to see if it makes a difference.

Currently, my RT31P2 has stock settings in all areas. Once I lower my Voip bandwidth usage, should I also adjust my QoS or any other router settings to optimize the performance?

Just as an FYI: Verizon doesn't offer DSL in my area, north of Seattle; Comcast is the only practical provider of broadband (and no, I don't consider satellite practical). So, changing broadband providers isn't an option that's available.
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mundy5
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Posts: 1179

PostPosted: Tue Aug 16, 2005 11:29 am    Post subject: Reply with quote Back to top

Jason,

I agree with you that your little experiment of working without your router has proven that the configuration in your rt31p2 is not optimal with your modem or with your NIC in your computer. Perhaps one of our other experts in this forum would like to help.

I am reminded of a similar issue with my desktop when I first purchased a router (a D-Link) because my NIC on my desktop was unable to autonegotiate with the router. So I just set it at 10mbps full duplex on my desktop and it has worked flawlessly ever since. It never gave me any problems when connected directly with my modem.

That is the only issue I can think of. Is your NIC an older model? Maybe changing the speed on it to 10mbps might help instead of leaving it on auto-negotiating mode. Something to think about.

_________________
St. Louis, MO
Vonage Customer from February 2005 to May 2010
ISP: Charter
Router: Linksys RT31P2 (blew up during electrical storm)
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VonageTPA
Vonage Forum MVM
Vonage Forum <b>MVM</b>


Joined: Jul 11, 2005
Posts: 1715
Location: Florida (usually)

PostPosted: Tue Aug 16, 2005 12:10 pm    Post subject: Reply with quote Back to top

Try playing around with the RT31's QoS settings and make sure that it has the proper upstream/downstream speeds entered into it. I believe it does this automatically, but it may not have picked the right values. If I recall correctly, you can find these options on the router's administration webpages at http://192.168.15.1/ and it'll be under the Applications and Gaming tab, then select QoS on the submenu.
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Jason98036
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Joined: Aug 15, 2005
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PostPosted: Thu Aug 18, 2005 9:36 am    Post subject: Reply with quote Back to top

VonageTPA wrote:
Try playing around with the RT31's QoS settings and make sure that it has the proper upstream/downstream speeds entered into it.

Part of the problem is that I don't know the proper QoS settings for Voip. I would assume the voice setting can be lower depending on the voice quality chosen, but that setting doesn't seem to auto-adjust the voice QoS in the router (it always remains 512). What QoS settings are others using successfully?

Note also that from what I can see, the RT31P2's QoS is very poorly implemented. It has two QoS areas, the top section appears to be for the three LAN ports, then a section titled "QoS Upstream Rate" with only one selector (no seperate settings for upstream/downstream speeds for voice that I can see).

For now, I've picked up a cheap seperate router that has me limping along, but it's not an ideal configuration. It is set as:

cable internet <=> D-Link DI-524 <=> PC and RT31P2 connected to the D-Link

With this arrangement, I've stopped having dropped connections and the phone works (although static/choppiness still exists, even at 'standard' voice quality), but the D-Link has no QoS settings at all. If I try switching the arrangement to be either:

cable internet <=> RT31P2 <=> my PC
- or -
cable internet <=> RT31P2 <=> DI-524 <=> my PC

then I return to the problem of dropping connections.
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Jason98036
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PostPosted: Fri Aug 19, 2005 9:14 am    Post subject: Reply with quote Back to top

Anyone? I would assume the voice setting can be lower depending on the voice quality chosen, but that setting doesn't seem to auto-adjust the voice QoS in the router (it always remains 512). What QoS settings are others using successfully on the RT31P2, and what voice quality setting are you using at that QoS? What speed is your broadband rated?

FYI: Test results from http://www.testyourvoip.com/index.html shown below:

Test Details
The information below explains why your call quality score (MOS) was less than perfect.


MOS Analysis from You TO San Jose

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 160 ms
Packet Discards 0.8%
Packet Loss 0.0%
Loss Periods Min: 20 ms
Avg: 20 ms
Max: 40 ms
Random Loss

Jitter Min: 0 ms
Avg: 8 ms
Max: 73 ms

Signaling Quality Post-Dial Delay 63 ms
Call Setup Time 78 ms
Media Delay 156 ms



MOS Analysis FROM San Jose To You

Media Quality MOS 4.4 / 5.0
(Best with G.711 is 4.4)

Degradation Sources
Codec 0.57 96.8%
Latency 0.00 0.0%
Packet Discards 0.02 3.2%
Packet Loss 0.00 0.0%

Codec G.711 (PCM at 64kbps,
20ms RTP payload,
80kbps IP BW)
Round-Trip
Latency 160 ms
Packet Discards 0.1%
Packet Loss 0.0%
Loss Periods Min: 20 ms
Avg: 20 ms
Max: 20 ms
Random Loss

Jitter Min: 4 ms
Avg: 7 ms
Max: 27 ms

Signaling Quality Post-Pickup Delay 62 ms
Call Setup Time 66 ms
Media Delay 93 ms
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