[asterisk-users] what can we do with lost voice packet on a congestioned VPN?

[nik600]

Hi to all
in a scenario where:

- the bandwith is shared with other traffic (HTTP,VPN,ecc)
- the PBX is on a remote VPN peer
- due to many reasons Qos is not usable

There is a IAX trunk between 2 Asterisk 1.4 i've tried different
codecs (ulaw,alaw,gsm) but the main problem still remain the same: too
many voice packet get lost.

The main problem is surely on the network, but the strange thing is
that on the same network there is an H323 trunk from an Alcatel and a
Cisco CCM (using g711 codec) and in that case the voice isn't so bad!

i've tried to enable jitterbuffer but i can't notice some difference.

Is there something else that i can do?

Thanks to all

-- 
/*************/
nik600
http://www.kumbe.it