[Asterisk-Users] Asterisk with Lucent TNT echo

[Jeremiah Millay]

I'm running SIP between my Lucent TNT acting as a gateway, and an 
asterisk server. We have a PRI coming into the Lucent. Basically the 
problem I'm having is mostly on inbound calls but some outbound calls as 
well. I hear echo and sometimes some weird artifacting on calls coming 
in from the lucent. Everything routed over IAX to VoIP Jet or Nufone 
sounds fine. It seems like every 3 calls I get is a bad one.
Does anyone on the list run asterisk with this configuration? Does 
anyone have any tips to solve this issue?
I've tried modifying the gains at the lucent, as well as turn off and on 
jitter buffers on asterisk. Tweaking these seems to help but I'm looking 
for something more solid. Any help would be appreciated.
Regards,
Jeremiah