Current Location ：
Keep building entrance and intercom
systems working for residents.
The visitor uses the existing call box. The resident or front desk answers and can return DTMF or door-release commands through the same controlled path.
Why Building Intercom Systems Need POTS Replacement
Building entrance and intercom systems rely on analog call boxes for visitor-to-resident communication. When carriers retire copper, the call path must survive.
Copper Lines Being Retired
Building entrance call boxes and intercom systems lose their connection path when carriers retire copper lines.
Call Box Workflow
The visitor uses the existing call box to reach the resident or front desk. This workflow must continue without change.
DTMF and Door Release
The resident or front desk answers and can return DTMF or door-release commands through the same controlled path.
How the Redstone Solution Works
The visitor uses the existing call box. The Redstone gateway provides a controlled path to the resident or front desk, with PSTN backup.
What Must Be Preserved
Building intercom workflows have 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 the building, call box type, and the resident answering model.
Complete Call Box Replacement
Rip-and-replace approach
- Replace all building entrance call boxes
- New wiring and installation
- Resident retraining on new system
- Building access disruption
- Higher upfront investment
Redstone POTS Replacement
Keep the call box. Replace the line.
- Use existing door call box
- No call box modification needed
- DTMF door-release preserved
- PSTN backup when IP is down
- Lower cost, faster deployment
Validate the Intercom Workflow
Acceptance should confirm the visitor-to-resident call flow and door-release commands work through both primary and backup paths.
The Continuous Value Path
POTS replacement is only the first step. The same platform can later support smart access, video intercom, and centralized building management.
Endpoint Reuse
Retain existing call box
Replace only the connection path
Platform Upgrade
Connect IP communications
Centralized building management
Smart Access
Video intercom and smart access
Visitor analytics and reporting
