PRI Cause Code issues - Always plays "All Circuits are Busy" message

I’m running a PIAF 1.3 install with FreePBX with 2 PRIs (US T1 esf/b8zs, 23 b-channels 24th as d-channel, PRI-CPE, National) and I’m receiving the correct cause codes from the network - 1,3,16,17,18… But on any types other than 16 (normal call clearing) users get a “All Circuits are Busy” instead of a busy signal or “this number has been diconnected…” etc. This has lead to much user confusion and frustration. I’m at a loss as how to address this from within FreePBX. Please Help!! :slight_smile: