Recorded 3/2/2021

NFPA 72 2013 prohibits Dual Phone Line DACT’s on new fire systems. Two phone lines are only to be used with the express permission of your local AHJ. Today’s cellular communications coverage and increasingly broad footprint, now with LTE (Long Term Evolution) offers more dependable fire alarm reporting. Optionally, dual-path communications have built in redundancy, so if ever cell was out, IP would get through or local AHJ requires dual path reporting.