Comments on: The Basics: Configure Quality of Service (QoS) for VoIP http://dailybeagle.com/2009/09/the-basics-configure-quality-of-service-qos-for-voip/ Curiosity hasn't killed me yet Mon, 06 Feb 2012 01:05:37 -0700 hourly 1 http://wordpress.org/?v=3.0.1 By: RealTime - Questions: "Is there any way to download at speeds more than that of advertised by the ISP?" http://dailybeagle.com/2009/09/the-basics-configure-quality-of-service-qos-for-voip/comment-page-1/#comment-46 RealTime - Questions: "Is there any way to download at speeds more than that of advertised by the ISP?" Wed, 01 Dec 2010 19:41:45 +0000 http://dailybeagle.com/?p=99#comment-46 [...] Conspiracy » The FCC and the Internet: www.drury.net.nz/2008/02/15/iphone-applications/ The Basics: Configure Quality of Service (QoS) for VoIP » The Daily Beagle Horrible RoadRunner Performance – Shame on Time Warner Cable of New York City — [...] [...] Conspiracy » The FCC and the Internet: http://www.drury.net.nz/2008/02/15/iphone-applications/ The Basics: Configure Quality of Service (QoS) for VoIP » The Daily Beagle Horrible RoadRunner Performance – Shame on Time Warner Cable of New York City — [...]

]]> By: dullgeek http://dailybeagle.com/2009/09/the-basics-configure-quality-of-service-qos-for-voip/comment-page-1/#comment-16 dullgeek Thu, 21 Jan 2010 18:43:47 +0000 http://dailybeagle.com/?p=99#comment-16 Just picking a tiny nit. There is some QoS that is possible on the inbound side using TCP congestion control. Basically what happens in a TCP session is that the sending side can't simply throw out as many packets as it's local network can handle, and expect everything to work. So there's a mechanism w/in TCP that slows the sender down. This is to the sender's benefit because if I'm downloading data from a website over a 56k modem, the sender will have to deal with a lot of packet retransmissions if it doesn't slow itself down to a speed that I can handle. TCP has builtin features to handle this kind of thing. It turns out that a router can manipulate inbound TCP streams so that it slows down all except the ones that it wants to give priority to. But you're right that it's a lot easier to control outbound traffic than inbound. Just picking a tiny nit. There is some QoS that is possible on the inbound side using TCP congestion control. Basically what happens in a TCP session is that the sending side can’t simply throw out as many packets as it’s local network can handle, and expect everything to work. So there’s a mechanism w/in TCP that slows the sender down. This is to the sender’s benefit because if I’m downloading data from a website over a 56k modem, the sender will have to deal with a lot of packet retransmissions if it doesn’t slow itself down to a speed that I can handle. TCP has builtin features to handle this kind of thing.

It turns out that a router can manipulate inbound TCP streams so that it slows down all except the ones that it wants to give priority to.

But you’re right that it’s a lot easier to control outbound traffic than inbound.

]]> By: Craig http://dailybeagle.com/2009/09/the-basics-configure-quality-of-service-qos-for-voip/comment-page-1/#comment-13 Craig Wed, 30 Dec 2009 00:54:22 +0000 http://dailybeagle.com/?p=99#comment-13 I would definitely disable QoS on the Hub (or Telo) if it's enabled on the router. Also, the bandwidth to the ooma device will be limited by the QoS setting. It will not use more bandwidth if needed. This configuration works for both the Telo and Hub. The router QoS is independent of the device. The router doesn't care why it's reserving (or limiting, depending on how you look at it) bandwidth, it just does what it's told. Good luck! Let me know if you have any more questions. I would definitely disable QoS on the Hub (or Telo) if it’s enabled on the router. Also, the bandwidth to the ooma device will be limited by the QoS setting. It will not use more bandwidth if needed.

This configuration works for both the Telo and Hub. The router QoS is independent of the device. The router doesn’t care why it’s reserving (or limiting, depending on how you look at it) bandwidth, it just does what it’s told.

Good luck! Let me know if you have any more questions.

]]> By: Greg http://dailybeagle.com/2009/09/the-basics-configure-quality-of-service-qos-for-voip/comment-page-1/#comment-12 Greg Tue, 29 Dec 2009 16:43:13 +0000 http://dailybeagle.com/?p=99#comment-12 Great info. Thanks for sharing! Since you configured QoS on your router, did you disable QoS on your Ooma hub, or leave it at its default settings? In your configuration above, you reserved 300kbit/s for the Ooma. I'm still learning about QoS, Tomato, and Ooma's configuration/setup, so I wonder if additional bandwidth is available (not being monopolized by other network traffic), will the Ooma use more than 300kbit/s or is it also limited to that amount? And if left in place, could Ooma's default QoS configuration limit bandwidth for the Ooma? So assuming you router QoS configuration reserves at least 300 kbit/s for Ooma but will still allow Ooma to use more bandwidth if it is available, could Ooma hub's default QoS configuration limit the bandwidth to whatever it is set at? If so, it would make sense to disable Ooma's QoS (use "0" for both download and upload). I just bought an Ooma Telo and plan to install it behind my router and configure QoS on the router (I will be using a WRT54GL and latest version of Tomato). I assume Telo and Hub are similar for QoS configuration. Hopefully my questions make sense... Great info. Thanks for sharing!

Since you configured QoS on your router, did you disable QoS on your Ooma hub, or leave it at its default settings?

In your configuration above, you reserved 300kbit/s for the Ooma. I’m still learning about QoS, Tomato, and Ooma’s configuration/setup, so I wonder if additional bandwidth is available (not being monopolized by other network traffic), will the Ooma use more than 300kbit/s or is it also limited to that amount?

And if left in place, could Ooma’s default QoS configuration limit bandwidth for the Ooma? So assuming you router QoS configuration reserves at least 300 kbit/s for Ooma but will still allow Ooma to use more bandwidth if it is available, could Ooma hub’s default QoS configuration limit the bandwidth to whatever it is set at? If so, it would make sense to disable Ooma’s QoS (use “0″ for both download and upload).

I just bought an Ooma Telo and plan to install it behind my router and configure QoS on the router (I will be using a WRT54GL and latest version of Tomato). I assume Telo and Hub are similar for QoS configuration. Hopefully my questions make sense…

]]> By: Craig http://dailybeagle.com/2009/09/the-basics-configure-quality-of-service-qos-for-voip/comment-page-1/#comment-10 Craig Fri, 23 Oct 2009 11:48:07 +0000 http://dailybeagle.com/?p=99#comment-10 With that kind of bandwidth you probably don't need QoS. Unless you're having trouble with call quality I wouldn't bother. As for setting outgoing QoS the first question would be how stable is your connection? If you get 5mbps up pretty consistently I would set the max bandwidth to 90% (4500kbits). Then set "Highest" at 10% and "Low" at 10% to 100% and see what kind of quality you get. With that kind of bandwidth you probably don’t need QoS. Unless you’re having trouble with call quality I wouldn’t bother.

As for setting outgoing QoS the first question would be how stable is your connection? If you get 5mbps up pretty consistently I would set the max bandwidth to 90% (4500kbits). Then set “Highest” at 10% and “Low” at 10% to 100% and see what kind of quality you get.

]]> By: John http://dailybeagle.com/2009/09/the-basics-configure-quality-of-service-qos-for-voip/comment-page-1/#comment-9 John Wed, 21 Oct 2009 20:01:53 +0000 http://dailybeagle.com/?p=99#comment-9 I guess I'm a little confused, I have 20 meg down and 4-5 meg up. How would that equate to this setup? Using OOMA hub and GS with Tomato 1.25. John I guess I’m a little confused, I have 20 meg down and 4-5 meg up. How would that equate to this setup? Using OOMA hub and GS with Tomato 1.25.

John

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