Fortinet FortiGate-FortiWiFi - Page 59

Syslog
When you believe that a problem might be modem-related, you should capture the DM log and send to the vendor,
which is Sierra Wireless in this case. for diagnostics.
FortiGate-FortiWiFi 5.0 3G4G LTE Modem Operator's Manual 59
Fortinet Technologies Inc.