wondering if anyone knows what this is. My mom's work has one for their alarm system...I know our city does not do direct alarm lines (BANA circuits) anymore...

I've never heard of it. :shrug:

Service Code:"LM" Non-access Definition: LAN Service; LAN, Non-Ethernet (Token Ring, FDDI, etc.)

"Z" = Modifier indicates a DC (direct current) component needed. (I think, I’m going from memory on the “Z” part.)

Well I asked one of the alarm guys at the job I am working on, he said it's a direct line like a BANA circuit.