MTG-10 - Ten available tones, organized into two groups of five tones - Contact initiated - Built-in background audio source fade-in/out - Priority ANSI compliant evacuation and siren tones - Telephone recording disclosure tone repeats every 15 seconds - Siren - Interrupted 784Hz tone - Door Chime ( Ding-Dong) - Warble (Electronic Ring) - Double Gong - Evacuation Whoop (ANSI/NFPA compliant, temporal slow whoop) - Telephone Recording Disclosure Tone (500ms beep, every 15 seconds) - Double Chime - Quadru

- Ten available tones, organized into two groups of five tones<br/>- Contact initiated<br/>- Built-in background audio source fade-in/out<br/>- Priority ANSI compliant evacuation and siren tones<br/>- Telephone recording disclosure tone repeats every 15 seconds<br/>- Siren<br/>- Interrupted 784Hz tone<br/>- Door Chime ( Ding-Dong)<br/>- Warble (Electronic Ring)<br/>- Double Gong<br/>- Evacuation Whoop (ANSI/NFPA compliant, temporal slow whoop)<br/>- Telephone Recording Disclosure Tone (500ms beep, every 15 seconds)<br/>- Double Chime<br/>- Quadruple Chime<br/>- Double Buzz