Topic: QoS for Asterisk PBX

[cydonia]

Hi there,

Could all other SME/Asterisk users outline how they improve QoS with Asterisk running on SME?

I have seen mention of Wondershaper, but not with a VoIP focus.


Cheers.
Tristan

[guest22]

Hi,

Qos is not much use on the server itself, if at all possible in a good way. Next to the fact that it depends where the voice traffic is traveling. If it goes to the public internet it's no use at all. If it's traveling on a wholy owned and managed network better use 'smart' routers and switches with build-in Qos and Vlan.

my 2 cents

[duncan]

Not QOS but we purchased a g.729 license which improved things quite a bit here. Priced around OZ 15.00 from ATP.

Still stutters a bit when doing downloads or browsing etc.

[cydonia]

Yeh i have g.729 also, but if someone was downloading something, or even just browsing a few websites simultaneously, it would make calls stutter.

I have heard of others using QoS with a software solution... however, the two oracles have spoken... hmmm.

[guest22]

cydonia,
'dive' into VPN or IPSEC. this will give you a bit more control of 'routes'.

The internet is a shared medium where nobody is in real controle by design...

RequestedDeletion

ps. you can limit 'unauthorised/unwanted' download by other means.... (squid, IP limit, ban the 'bastard')

[meanpenguin]

Not an SME solution but, there are firmware enhancement to the Linksys WRT54G's that has pretty good QoS for VoIP traffic.

Google... You can find them for free....
  or
See http://slashdot.org/~TheIndividual/journal/

Ed

[duncan]

Tristan,

I will have a shot at wondershaper and let you know. A search on google indicate its a winner.

Regards Duncan

[jacobsweb]

Tristan,

I will have a shot at wondershaper and let you know. A search on google indicate its a winner.

Regards Duncan

i tried it, works ok... better then nothing

[duncan]

It seems to make a big difference to latency problems during high traffic - and as you say works ok for Voip.

I have got the .htb version working - and will probably bang out a rpm this week.

[cydonia]

Hey Duncan,

Interesting, somebody on another forum said they were using a modified wondershaper to improve QoS with Asterisk.  Said it works quite well.

I look forward to your windershaper rpm.  I still have to install * using your install rpm on my new server actually...first things first.


Cya.
Tristan

[cydonia]

It seems to make a big difference to latency problems during high traffic - and as you say works ok for Voip.

I have got the .htb version working - and will probably bang out a rpm this week.

Just wondering where you ran the script from within SME?  And whether or not this is even important...

Also, when set to ppp0, have you been able to define somehow to make it launch automatically whenever ppp0 is active?

Thanks
Tristan

[duncan]

Hi Tristan - I am using hardware IPSec devices here for gateways so I am no longer running wondershaper.

If I remember correctly - the script can be run from init.d with the appropriate links. I guess it could be called from the ppp up scripts.