Brian,

I put two au files here:

http://www.ldr.scarlet.nl/ua-to-fs.au
http://www.ldr.scarlet.nl/fs-to-mgw.au

It's a call from a Siemens SX762 (using ALAW) to FS (no transcoding)  
which bridges it to a mediagateway.
Proxy-media is disabled on the incoming sip_profile.
Both au files are extracted from the same pcap file.

As you can hear, the second sample sounds bad.. Are there any flags I  
can set in the incoming or outgoing sip_profile that may fix this ?

The server has zero load (it's a Dell R300 with 2.6.24-23-server 64  
bit kernel). In fact, this was the only call going through..

FS is version 12163M

thanks,

Leon