The comprehensive decommissioning of the classic analog telephone networks (PSTN/POTS) and the shutdown of 2G/3G mobile networks mark a fundamental turning point. This change is far more than a simple hardware replacement—it requires a complete redesign of the security infrastructure.
With BinaStar, secure, reliable, and up-to-date into the future. The clock is ticking!
2G is slowly saying goodbye; 3G PSTN & analog signals. The shutdown of old networks is in full swing. Let's act now!
According to DIN EN 81-28, the following information should be available at a minimum for quick help in an emergency:
According to DIN EN 81-28, the following information should be available at a minimum for quick help in an emergency:
Elevator ID, Serial No.
Location, Address, Access
Emergency Call / Test Call / Malfunction
2-Way Voice Connection
Inventory of all analog and 2G/3G-based connections. Identification of systems without native IP capability.
Conversion to future-proof 4G-LTE gateways (VoIP/SIP-ready) that meet the EN 81-28 requirements for emergency power supply.
Use of M2M multi-operator roaming SIM cards to guarantee maximum network availability without the risk of deactivation.
Preference for open protocols (LACS or MQTT-encapsulated P100) to avoid vendor lock-in and ensure future security.
New telephone system with redundancy and maximum reliability.
In the event of an emergency call, all important data packets (audio, information, etc.) arrive at the emergency call center.
Ensuring that all relevant information and master data (emergency release instructions, access codes) are digitally available to the emergency call center in the event of an emergency call, according to DIN EN 81-28, VDMA 15324, and TRBS 3121.
While the old landline powered terminal devices directly via the telephone line, IP infrastructures on-site require their own uninterruptible power supply (UPS).
The use of standard routers (e.g., Fritz!Box) as ATAs is unsuitable for security-critical emergency calls. Connection interruptions and latencies are inherent to the system.
Identification data via DTMF tones are so heavily distorted in digital networks by lossy codecs (AMR) that the emergency call center can no longer identify the elevator.
The most serious risk for operators: Since analog technology has no native line monitoring in IP environments, the elevator suggests operational readiness while the connection is actually dead. This immediately violates EN 81-28, which requires an automatic test alarm every 72 hours. A failure leads to the immediate loss of the operating permit.
Criterion
Power supply
Signal transmission
Infrastructure
Resilience
SIM card
Analog copper line (legacy)
Power supply via telephone network
Analog tones (DTMF)
Physical direct connection
Vulnerable to earthworks / copper theft
Not relevant
4G/LTE systems (modern)
On-site backup batteries mandatory
Packet-switched data (VoIP/SIP)
Gateway as a digital hub
High via mobile network redundancy
M2M multi-operator roaming SIM recommended
EN 81-28
Defines the minimum technical standards for elevator emergency call systems:
TRBS 3121 (2025)
Specifies the Ordinance on Industrial Safety and Health. Key innovations:
VDMA 15324
The "Operational Blueprint" for the emergency call center. The following data must be available digitally: