Specs for web meetme?

[tdnnash25]

Are there minimum requirements for conferencing other than bandwidth? I want to handle 10-20 concurrent calls in a conference call. What specs should I have?

 

[Baylink]

Yeah, CPU horsepower.

Meetme's are all in slin anyway, I'm told, so you *will* be doing transcoding, but some codecs take more horsepower to convert than others.

And the other issue is SWEC: if you're doing echo cancelling not in hardware, that will take up some CPU as well.

The only real way to be sure is to build a test conference with a bunch of test sources like playbacks, and listen to it.

 

[tdnnash25]

What about bandwidth per call? I noticed poor performance when I got 5 calls going. I didn't see spike in cpu or RAM but I only am getting about 800kbps down and 400+kbps up .... I'm thinking it is my slow speeds ... concur?

 

[Baylink]

You're not really clear there: uplink bandwidth to the Net?

Are these calls all coming in via VoN? Yeah; that's gonna be an issue, the side issue that lots of people forget is that VoIP, whether internal or over the Internet, is prone to lots of teeny packets, and there's lots of equipment that can handle the bandwidth, but craps out on the packet per second count.

 

[tdnnash25]

You're not really clear there: uplink bandwidth to the Net?

Are these calls all coming in via VoN? Yeah; that's gonna be an issue, the side issue that lots of people forget is that VoIP, whether internal or over the Internet, is prone to lots of teeny packets, and there's lots of equipment that can handle the bandwidth, but craps out on the packet per second count.

Sorry if I wasn't clear. I ran a speedtest at speakeasy.net/speedtest and those were my speed test results. Not sure how to be more clear. I'm pretty new to the VoIP world, so not sure what VoN stands for. I guess I just need to know what the average call takes up as far as your bandwidth is concerned. I want to be able to support 10-20 simultaneous calls, so I wish I knew what kind of Internet connection I need from my ISP.

 

[Baylink]

Voice Over Net -- that is, calls moving over the public Internet, as opposed to *merely* over IP transport.

It makes a pretty big difference in how hard you can push things.

So, let's go back to the beginning, where you say 10-20 calls, but you don't say which of those calls are from a local LAN, which are from a VPN'd remote LAN, perhaps, and which are from the Internet.

To determine whether your uplink bandwidth will be an issue, we'll need to know that.

As a snapshot judgement, though, yeah, if you're trying to fit even 10 calls up that much uplink, much less 20, you might have trouble from that.

Fixing that problem will entail either buying a bigger pipe or hosting your instance in a datacenter with bigger hoses. I assume you're running on DSL...

 

[tdnnash25]

Voice Over Net -- that is, calls moving over the public Internet, as opposed to *merely* over IP transport.

It makes a pretty big difference in how hard you can push things.

So, let's go back to the beginning, where you say 10-20 calls, but you don't say which of those calls are from a local LAN, which are from a VPN'd remote LAN, perhaps, and which are from the Internet.

To determine whether your uplink bandwidth will be an issue, we'll need to know that.

As a snapshot judgement, though, yeah, if you're trying to fit even 10 calls up that much uplink, much less 20, you might have trouble from that.

Fixing that problem will entail either buying a bigger pipe or hosting your instance in a datacenter with bigger hoses. I assume you're running on DSL...

Sorry. All calls would be coming over the Internet - not on a local network. As of right now, I'm just testing this on a basic DSL connection. My test speeds as mentioned were 800kbps download and 400kbps upload.

To fit 10 calls on a conference, all external ... would 5000kbps down and around 800kbps up be sufficient?

 

[kwest]

This is the rule I live by to be safe is 100k per caller so if you only have 400kbs up stream the max would be 4 calls, then 800kbs=8 calls.

 

[Baylink]

5M down would be plenty. 800K up you'd be pressed; depends a lot on which codecs you permit. With 729 (for which you'd have to pay someone to be strictly legal), you'd probably be fine. 723 might be dicey. 711, you'd definitely be at risk.

In the real world, though, if you're charging people to use this -- or using it for mission/image critical work -- you don't really want to be doing it on an assymetrical line.

Is it actually required that you host it in house? Cause for what you're going to pay for a decent uplink, you can rent an entire server at a colo, with 100/100 access...