Current Location ：
Keep elevator emergency phones
connected and compliant.
The passenger presses the existing emergency button. If SIP is unavailable, Redstone routes the call through FXO/PSTN or the EGW50 cellular path to an on-duty operator.
Why Elevator Emergency Phones Need POTS Replacement
Elevator emergency phones are required by code. When carriers retire copper lines, the backup path must still work.
Copper Lines Being Retired
Carrier-provided analog lines are being retired, leaving elevator emergency phones without a connection path.
ASME A17.1 Requirement
Elevator codes require a working emergency phone with backup path. Compliance cannot be interrupted by carrier changes.
Automatic Backup Switching
When IP service is unavailable, Redstone routes the call through FXO/PSTN or the EGW50 cellular path to an on-duty operator.
How the Redstone Solution Works
The passenger presses the existing emergency button. Redstone provides dual-path routing: SIP when available, PSTN/4G when it is not.
What Must Be Preserved
The elevator emergency phone system has specific requirements that must continue to work after POTS replacement.
Real-World Scenario
See how the Redstone solution applies in a real deployment environment.
Designed for Your Environment
The Redstone gateway integrates seamlessly with your existing infrastructure. No device replacement, no workflow change — just a modernized connection path with reliable backup.
A Lower-Disruption Alternative
The right path depends on building requirements, elevator code, and the available backup path.
Complete System Replacement
Rip-and-replace approach
- Replace the entire elevator phone system
- Possible permitting and inspection
- Elevator downtime during installation
- Higher upfront investment
- New user training for staff
Redstone POTS Replacement
Keep the phone. Replace the line.
- Use existing elevator emergency phone
- No elevator car modification needed
- Dual-path failover: SIP + PSTN/4G
- ASME A17.1 compliance maintained
- Lower cost, faster deployment
Validate the Emergency Call Flow
Acceptance should confirm the emergency call reaches the on-duty operator through both primary and backup paths.
The Continuous Value Path
POTS replacement is only the first step. The same platform can later support remote monitoring, centralized management, and predictive maintenance.
Endpoint Reuse
Retain existing elevator phone
Replace only the connection path
Platform Upgrade
Connect IP communications
Centralized remote monitoring
Smart Services
Predictive maintenance
Call analytics and reporting
