Elevator Emergency Telephones – Frequently Asked Questions
What does EN 81-20 require for elevator emergency communication?
EN 81-20 clause 5.4.8 requires: a two-way voice communication device operable by a single action; automatic dialling to a permanently manned monitoring point; battery backup providing at least 1 hour standby and 3 minutes of voice communication; an indication inside the car that the call has been received; and protection against unintended activation. The system must remain functional even if main power is interrupted.
What is the difference between EN 81-28 and EN 81-20 for emergency communication?
EN 81-20 specifies the basic requirements for emergency communication devices as part of the overall lift safety standard. EN 81-28 is a dedicated standard for remote alarm systems for passenger and goods lifts, specifying the communication protocol, monitoring centre requirements, response time obligations, and fault reporting. Installations in most European markets require compliance with both standards.
Can GSM-based emergency telephones replace landline PSTN systems?
Yes, subject to regulatory approval in the specific market. GSM/4G-based emergency telephone systems are increasingly replacing analogue PSTN connections as landline infrastructure is decommissioned. EN 81-28 compliant GSM units must maintain the required call quality, battery backup, and monitoring centre connectivity. Turkish suppliers on Elevator.tr offer dual-mode (GSM + PSTN) systems for maximum reliability.
What is a monitoring centre and is it required for all buildings?
A monitoring centre (also called an alarm receiving centre or ARC) is a permanently staffed facility that receives emergency calls from elevator intercom systems, confirms passenger entrapment, and dispatches rescue services. EN 81-28 requires connection to a 24/7 monitoring point, which may be a dedicated elevator monitoring centre, building security desk, or outsourced monitoring service provider. Turkish elevator monitoring service companies listed on Elevator.tr offer 24/7 ARC contracts for building owners.