I need analogues lines for intercom in LIFT's. (if lift stops and someone is inside press button and a call is made to a number to ask Help).
Also this analogue line will be used by Maintenance company of lifts to monitor status of lift so these type is a data connection.
What is more reliable to choose VG224 or ATA 186 for these two types of conneciton that i need? or are not supported?