enum/custom trunk audio problems

[adamf663]

I had an enum rule for tollfree calls working until recently when audio on it died. I switched to a gizmo account for 800 access, but I have some audio problems with it where the audio will cut out for 5-15 seconds at a time about every 10 minutes.

I'd like to get the enum trunk working so I have some more choices.
For ENUM, I have one dial rule: 1+NXXNXXXXXX

For custom rules to do something similar, I have:
SIP/[email protected] ,
SIP/[email protected] and
SIP/[email protected]

I connect to my asterisk box either with analog phones connected through a linksys PAP2, or a twinkle softphone. I use G711 ulaw.
When I make an tolls free call with a broken trunk (ENUM, or one of the Customs), the call connects, softphone/FXS status shows 711u being used, but no audio.

Not sure where to look for answers. The custom rules sometimes work, perhaps one call in ten. Gizmo always works (with dropouts), and I use contacttel for DID and all non-tollfree calls. I haven't experienced any dropouts with contacttel.

Asterisk box sits behind a NAT. 5060 incoming maps through the router to the asterisk box. Linksys PAP2 has 5061/5062, softphone has 5063.