I've configured speed dials on an expansion module. It worked fine.
Some days later I've tried to change one entrance. After the reset no speed lines appeared on the module. After some troubleshooting with no success I've configured a speed dial on the phone itself (7961G). It did not appear after resetting the phone. I even did some tests changing the phone button template and none of these worked.
I've done the same to another 7961G with expansion module and had the same results.
Any idea of what is happening?