[Asterisk-Users] uplink call quality issues

[Stewart Nelson]

Hi,

Are you sure that this is an Asterisk problem?  Configure an IP phone,
ATA, or softphone to connect directly with the provider, and check the
quality.  If it's bad, use tools such as 
http://www.testyourvoip.com/ and
http://www.pingplotter.com/ to troubleshoot.

If standalone phone works ok, compare with *.  Same codec? 
Same packetization?  If not, adjust * to match.   If they're the same,
please provide info on your Internet connection upload speed, codec,
type of client phones, etc.

--Stewart 

> We are using asterisk at home 1.5 and SIP trunks to communicate to the PSTN
> network. We are having some problems with the call quality.
> Although we can hear the other person's voice quite clear when making or
> receiving a call, we get complaints from the people on the other end
> saying
> that our voices sound very unclear, low and
> that the voice drops, therefore people on the other end can not understand
> what we are saying. But as I said in our end their voices sound clear.
> 
> I have checked network wise and found no latency problems within our small
> LAN, with our VoIP provider and reaching  their SIP server's IP address,
> also the CPU load in the asterisk server has been graphed and does not
> exceed the normal CPU load levels
> 
> Any assistance will be very much appreciated
> 
> PolAus