DialogPTT transforms your Android device into a professional Push-to-Talk radio, purpose-built for field teams, security operations, lone workers, and enterprise deployments.

**INSTANT GROUP COMMUNICATION**
Press and hold to talk across unlimited talkgroups. Crystal-clear Opus audio at 48 kHz delivers better voice quality than traditional analogue radio networks. Switch channels instantly, monitor multiple groups simultaneously, and send per-channel text messages when voice isn't appropriate.

**END-TO-END ENCRYPTED**
All voice traffic is encrypted with AES-256-GCM before it leaves the device. Audio is protected end-to-end — your conversations cannot be intercepted in transit, even on untrusted networks.

**BUILT FOR THE ENTERPRISE**
Connect to your organisation's private Dialog PTT server — your voice traffic never touches third-party infrastructure. Full dispatcher integration gives control room operators a live view of every field unit, with the ability to push status updates, remote commands, and firmware updates directly to devices over the air (OTAP).

**ALWAYS-ON AWARENESS**
Live GPS tracking keeps dispatchers informed of unit locations at all times. Geofence alerts notify the control room automatically when units enter or leave defined zones. SOS and man-down alarms give field workers a single tap to raise an emergency, with automatic lone-worker check-in timers as a safety net.

**WORKS WITH YOUR HARDWARE**
Dedicated PTT hardware is fully supported out of the box — Hytera P50/P50E/P60, Inrico S380/T740A, Motorola Solutions, Sonim, Blackview BV-series, and most Bluetooth headsets with a PTT button. No configuration required on supported devices.

**KEY FEATURES**
- Push-to-Talk over cellular (PoC) via AES-256-GCM encrypted QUIC/WebSocket transport
- Private and group calls with full call history and recordings
- Real-time GPS location sharing and geofencing
- SOS alarm, man-down detection, and lone worker monitoring
- Text messaging per channel
- Over-the-air (OTAP) remote configuration and app updates
- Hardware PTT button support (Hytera, Inrico, Motorola, Sonim, Blackview, Bluetooth)
- Works over WiFi, 4G, and 5G
- Self-hosted — your server, your data

**ACCESSIBILITY SERVICE**
DialogPTT uses Android's Accessibility Service on compatible PTT radio hardware (Hytera, Blackview BV-series, Inrico, and similar devices) to detect hardware PTT button presses and SOS key events when the app is running in the background or the screen is off. The service only intercepts hardware key events — it does not read screen content, access passwords, monitor other applications, or collect any data. You can disable it at any time in Settings → Accessibility.

---

DialogPTT requires a Dialog PTT server. Contact Syntaxis Technologies for deployment and licensing.