VoIP Paging Adapter – SIP-T21
Product Overview
The Tonmind SIP-T21 VoIP Paging Adapter is an advanced and reliable IP audio gateway that transforms traditional analog paging systems into modern, network-based communication systems. Designed for seamless integration with VoIP SIP PBX servers and ONVIF-compatible VMS/NVR platforms, this paging adapter provides a professional solution for real-time paging, broadcasting, and emergency alert applications.
With 15W audio output, PoE power supply, and multiple alarm interfaces, the SIP-T21 combines high-quality sound performance with flexible connectivity. It's a perfect choice for organizations looking to upgrade their communication systems in schools, hospitals, industrial facilities, offices, shopping centers, and public transportation hubs.
Key Features
- Dual Protocol Support: Compatible with both SIP and ONVIF for seamless integration with IP PBX, NVR, and VMS systems.
- High-Definition Audio: Supports 48K OPUS codec for crystal-clear communication and broadcasting.
- Multiple Interfaces: Equipped with MIC input, headset output, and speaker output for flexible use with analog audio equipment.
- Versatile Alarm Triggers: Supports GPIO, HTTP URL, and relay output, ideal for automated alerts and emergency notifications.
- Power over Ethernet (PoE): Simplifies installation by providing power and network connection through a single cable.
- Compact & Durable Design: Built with a metal housing, ensuring long-term stability and easy installation in any environment.
- Customizable Options: Supports OEM and ODM customization to meet specific project or brand requirements.
Applications
The Tonmind SIP-T21 VoIP Paging Adapter is widely used in:
- Educational Institutions: School-wide paging and emergency alerts
- Corporate Offices: Intercom and broadcast announcements
- Industrial Facilities: Equipment alarms and real-time communication
- Hospitals: Nurse call and emergency notification systems
- Retail & Malls: Background music and promotional broadcasts
- Transportation Hubs: Public announcements and evacuation alerts
Technical Specifications
| Category | Specifications |
|---|---|
| Audio Decoding | OPUS 48kHz, MP3 44.1kHz, G.722 ADPCM 16kHz, G.711 PCMU/PCMA 8kHz |
| Network Security | Password protection, IP filtering, Digest authentication, User access log |
| Network Protocols | SIP, ONVIF, HTTP, IPv4, DHCP, RTSP, RTP, RTCP, TCP, UDP, ARP, FTP, TFTP, NFS, NTP |
| Network Interface | 10/100 Base-TX, RJ45 |
| VoIP Compatibility | 2 SIP accounts, SIP direct IP call, RTP multicast |
| Audio Codecs | OPUS, G.711U, G.711A, GSM, MP3, WAV |
| Amplifier Output | 15W |
| Power Supply | PoE or DC 12V |
| Interfaces | 2×LAN ports, 1×MIC input, 1×Headset output, 1×Speaker output, 2×IO alarm input, 2×Relay |
| Material | Metal |
| Dimensions | 112 × 105 × 29 mm |
| Weight | 250 g |
| Language | English |
| Warranty | 2 Years |
| Package Includes | SIP Paging Adapter, Quick Start Guide |
| Customization | OEM & ODM supported |
Why Choose Tonmind SIP-T21 VoIP Paging Adapter
Xiamen Tonmind Technology Co., Ltd. is a leading VoIP paging adapter manufacturer and exporter in China, committed to providing high-performance IP audio solutions for global partners. With proven R&D capabilities, strong OEM/ODM support, and advanced production facilities, Tonmind ensures every product meets international quality and reliability standards.
Whether you're upgrading an existing analog system or building a new IP-based communication network, the Tonmind SIP-T21 offers the reliability, flexibility, and performance needed for professional-grade paging and alerting solutions.
Looking for a reliable VoIP Paging Adapter manufacturer for your brand or project?
Contact Tonmind today to discuss your ODM/wholesale partnership and get a custom IP audio solution tailored to your needs.
Get in Touch | 🌍 www.onvifaudio.com