No messages on alarm activation

[Markus9955]

I'm getting the A, D, U and Z codes from my panel with a serial to USB lead hooked up to COM1 configured for crestron but I don't get the L code when the alarm is triggered. All I get is the Z for the zone that is active.

Does anyone know if this is something tat was added in a particular version of panel firmware or a config option? My panel is on v3.00 so very old.

I get the alert of the alarm triggering via SMS from my COM-GSM.

Any help greatfully appreciated.