Algo 8373 IP Zone Paging Adapter — Bridge Your Analog PA System to VoIP

The Algo 8373 is a PoE IP zone paging adapter that seamlessly integrates traditional analog amplifiers and zoned paging systems into your VoIP environment. Whether you're running a hosted, cloud, or premise-based SIP phone system, the 8373 eliminates the need for legacy zone controllers, FXS ports, or ATA hardware — saving you cost and complexity.

Key Features & Specifications

• 3 Zone Outputs: High-current internal zone control relays support up to 3 separate speaker zones per adapter, expandable via multicast
• SIP Endpoint: Fully compliant 3rd-party SIP endpoint — compatible with Avaya, Cisco, Mitel, NEC, Poly, Microsoft Teams (SIP Gateway), and more
• Wideband HD Audio: G.722 codec with isolated, balanced line output (XLR & terminal block) for clear, hum-free paging
• PoE Powered: IEEE 802.3af — no local power supply needed
• Up to 50 Multicast Zones: RTP multicast send/receive plus Polycom Group Page support for scalable deployments
• Up to 50 SIP Extensions: Map zones to individual extensions or use DTMF keypad selection
• Dry Contact Closure: Available for amplifier activation
• Secure: TLS, SRTP, and mutual authentication support
• Easy Setup: Intuitive web interface or auto-provisioning (TFTP, FTP, HTTP, HTTPS)
• Wall Mountable: Bracket included; UL/CSA, FCC, and CE certified

Ideal Applications

Perfect for education (schools, universities), healthcare, retail, manufacturing, government facilities, and transport terminals that need to bridge legacy analog PA infrastructure to a modern IP phone system.

Backed by Reef Telecom's industry-leading 10-year warranty. Free shipping on orders over $300. Buy with confidence from a trusted enterprise telecom reseller.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.