Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


58 posts

Master Geek

#61272 13-May-2010 07:47
Send private message

Hi All,

I'm about to delve into the world of VOIP and this is really a step up in complexity compared to POT! Anyway, I like the ability to select an ISP on performance and not have to deal with land line issues at the same time.

I happen to run a FreeBSD is the main gateway on my network and I wonder if it's traffic shaping capabilities are useful when going VOIP. I.e. should I always leave 8kpbs availabe for VOIP? Do people use that? Is that recommended? Does it improve quality? And I mean especially responsiveness, I just hate those delays when talking to people.

And should it be 16kpbs instead of 8kpbs?

So like to hear from people doing that kind of thing and what their experiences are.

Thanks a lot,


Create new topic
2444 posts

Uber Geek


  #329623 13-May-2010 08:02
Send private message

You should look @ the codec you are using and number of VOIP calls you are making simultaneously. 8k reserved for G711 for 2 calls would be useless.

Affiliate link

Affiliate link: Free kids accounts - trade shares and funds (NZ, US) with Sharesies.
30853 posts

Uber Geek

Retired Mod
Biddle Corp
Lifetime subscriber

  #329643 13-May-2010 09:16
Send private message

It depends entirely on the codec you are using and the number of concurrent calls. If you're going to be using G711 or a wideband codec such as G722 than depending on your exact network overheads you are looking at somewhere around 87kbps in each direction for a call. A codec such as G729 will use roughly 1/2 this.

So QoS is important, but you need to know a lot more about what you're actually setting up and how QoS works before you start making changes.


58 posts

Master Geek

  #329650 13-May-2010 09:42
Send private message

I get the part on that reserved bandwidth is depending on the codec, but obviously this cuts both ways: i.e. select a codec on the bandwidth you want to consume.

But is it useful? Are people doing it? Will it help with QOS? Or is the general advice: don't bother unless you have a problem?

Thanks so far,


Create new topic

News and reviews »

Belkin Screenforce Tempered Glass Screen Protector and Bumper - Apple Watch
Posted 15-Aug-2022 17:20

Samsung Introducing Galaxy Z Flip4 and Galaxy Z Fold4
Posted 11-Aug-2022 01:00

Samsung Unveils Health Innovations with Galaxy Watch5 and Galaxy Watch5 Pro
Posted 11-Aug-2022 01:00

Google Bringing First Cloud Region to Aotearoa New Zealand
Posted 10-Aug-2022 08:51

ANZ To Move to FIS Modern Banking Platform
Posted 10-Aug-2022 08:28

GoPro Hero10 Black Review
Posted 8-Aug-2022 17:41

Amazon to Acquire iRobot
Posted 6-Aug-2022 11:41

Samsung x LIFE Picture Collection Brings Iconic Moments in History to The Frame
Posted 4-Aug-2022 17:04

Norton Consumer Cyber Safety Pulse Report: Phishing for New Bait on Social Media
Posted 4-Aug-2022 16:50

Microsoft Announces New Solutions for Threat Intelligence and Attack Surface Management
Posted 3-Aug-2022 21:54

Seagate Addresses Hyperscale Workloads with Enterprise-Class Nytro SSDs
Posted 3-Aug-2022 21:50

Visa Launching Eco-friendly Payment Solutions in New Zealand
Posted 3-Aug-2022 21:48

NCR Delivers Services to Run Bank of New Zealand ATM Network
Posted 30-Jul-2022 11:06

New HP Portfolio Supports New Era of Hybrid Work
Posted 28-Jul-2022 17:14

Harman Kardon Launches Citation MultiBeam 1100 Soundbar
Posted 28-Jul-2022 17:10

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.