I was able to resolve this issue once I looked in “dmesg | grep dahdi” and saw a message complaining about older firmware. The upgraded DAHDI is apparently looking for the latest firmware from December.
To fix the issue, I downloaded the version 780017 firmware for my card from http://downloads.digium.com/pub/telephony/firmware/releases/. Since you’ve got a TE133, the file you need is dahdi-fw-te133-780017.tar.gz.
I found the firmware file in two places on my system, and didn’t know which was being used, so I replaced both, in /lib/firmware and in /usr/lib/hotplug/firmware. I just renamed the existing dahdi-fw-te134.bin to .old, and extracted the one from the tarball into its place. Reboot, and everything works fine.
I had to start from scratch in the DAHDI Config module, but that’s because I cleared out the config troubleshooting it. If you haven’t already borked your DAHDI configuration, you should be able to just drop in the new file and run.
Hope that helps.
Corey