[asterisk-users] bad call quality

[Edrich de Lange]

Noah Miller wrote:
> Hi Edd -
>
>   
>> I run a couple of asterisk servers all connecting
>> to international sip providers.
>> All three servers are on the same type of internet connection
>> (Martis/Diginet).
>> There isnt a shortage of bandwidth, and its not a codec issue, as ive
>> tried swapping codecs.
>> If its not a line issue, because if i route the calls via sip via
>> another server(which i own)(in same country) and then break out from
>> there i get good quality, but im paying for triple bandwidth then, and
>> bandwidth in south Africa is hellishly expensive.
>> The Physical hardware is not overloaded either.
>> I have tried rebooting my equipment, and that changed nothing either.
>>  if i do a ping flood i get decent results(well, only about 10ms more
>> than another perfectly working branch)
>>
>> What else could this Be?
>> Im completely Dumbstruck.
>>     
>
> Is there any other non-VoIP traffic using the same internet connection
> as the asterisk server?  If so, this could very well be a QoS issue.
> You can get some nasty sounding calls even on a very fat internet
> connection if there is no QoS.  One of my clients has a 100mb fiber
> connection to the internet, and we had to really fine tune their Cisco
> routers in order to get usable VoIP calls to their branch offices.
>
> I've also seen internet connections that are just very poor, and no
> amount of internal QoS can fix this.
>
> What kind of routing equipment are you using?
>
>
> - Noah
>   
Im Using a cisco, but the internet connection is dedicated to VOIP.