| Ask for Installation manual of your system from your Rep. It can be found in the Troubleshooting section. Here's what it says about alarm 100.
100 Device x.y.z `xxxxx’ Reset Due To Excessive Data Errors – The indicated phone
has detected an unusually large number of data errors from the corresponding keyset
card and has been reset (dropping any active call). If the resets continue, the system will
“lock out” the phone. The data errors may be caused by a defective phone (perform
keyset self-test), defective wiring, defective station cable, or a defective keyset card. |