CMR-LP is a NEC / UL (USA) cable designation: C = Communications cable; M = Multipurpose rating (reading by usage, UNVERIFIED); R = Riser; LP = Limited power: rated current per conductor printed, for power over Ethernet (NEC 2023); CMR-LP = Communications cable, riser rated (vertical shafts, UL 1666), limited power (LP): marked with the current per conductor for PoE. 300 V, 75 C. UL 444; NEC 800.179(B).
Multipurpose rating (reading by usage, UNVERIFIED)
R
Riser
LP
Limited power: rated current per conductor printed, for power over Ethernet (NEC 2023)
CMR-LP
Communications cable, riser rated (vertical shafts, UL 1666), limited power (LP): marked with the current per conductor for PoE. 300 V, 75 C. UL 444; NEC 800.179(B)