Description
The Algo 8028 SIP Doorphone (G2) is a two-piece IP intercom solution built for secure visitor entry at doors, gates, and access points. The outdoor-rated intercom station handles clear two-way communication while the separate indoor controller keeps the network connection and door relay completely protected from tampering. Powered by PoE (or PoE+ for higher strike power), it delivers wideband HD voice and works with virtually any hosted or on-premise VoIP/UC platform – no FXS port or ATA required. Whether you’re upgrading legacy analog intercom wiring or installing new, the single twisted-pair connection (up to 1,000 ft) makes deployment simple and cost-effective.
The Telecom Spot Expert Take: For IT managers and facility teams who need reliable, secure visitor communication without exposing the network or door controls, the Algo 8028 stands out as a smart, future-proof choice. The two-piece design (outdoor station + indoor controller) eliminates common tampering risks that plague single-unit doorphones. Wideband G.722 audio cuts through noise for crystal-clear calls, while the backlit call button and NEMA 3R rating handle real-world weather and low-light conditions. We see the biggest wins in mixed-use facilities where quick retrofit of existing wiring saves thousands in labor – plus the RESTful API and multicast options give advanced users extra flexibility. If your team wants plug-and-play SIP integration with Microsoft Teams, Zoom, or RingCentral and rock-solid access control, this is the unit that consistently delivers.
Key Features
- Secure two-piece design – Intercom station stays outside while the controller (with relay) stays safely indoors, preventing tampering with network access or door strikes.
- Hands-free wideband HD voice – G.722 codec delivers clear, intelligible speech even in noisy environments like warehouses or busy entrances.
- Keypad-activated door/gate control – During a call, any phone keypad can send a DTMF code to momentarily unlock the door or gate – configurable duration keeps security tight.
- Easy retrofit with existing wiring – Single twisted-pair (24 AWG) connection runs up to 1,000 ft, perfect for upgrading legacy analog intercoms without new cabling.
- Outdoor-rated durability – NEMA 3R/IP66 stainless steel faceplate, weatherproof mylar speaker, and conformal-coated circuitry stand up to rain, dust, ice, and temperature swings (-40 °F to +122 °F).
- PoE/PoE+ powered – Simple network deployment with optional 24V DC backup; supports up to 500 mA strike power when using PoE+.
- Full SIP compatibility – Secure TLS/SRTP, multicast receive (50 zones), RESTful API, and auto-provisioning for seamless integration with any modern UC platform.
- Door sensor input – Detects open/closed status to prevent tailgating and adds extra security layers.
Technical Specifications
| Category | Details |
|---|---|
| Power | PoE / PoE+ (IEEE 802.3af/at); optional 24V DC; Max 9 W (PoE), 23 W (PoE+); Idle 2.5 W |
| SIP | UDP, TCP, TLS, RTP, SRTP; One extension |
| Audio | Codecs: G.711 A-law/u-law, G.722 Wideband; Weatherproof mylar speaker; Omnidirectional mic; 1 GB audio storage; Hands-free two-way |
| Relay Output | NO/C/NC contacts rated 30 V 1 A max; 24 Vdc 500 mA (PoE+), 250 mA (aux DC) |
| Wiring | Single twisted-pair 24 AWG up to 1,000 ft (305 m) between station and controller |
| Environmental | Intercom: Outdoor NEMA 3R / IP66, -40 °F to +122 °F (-40 °C to +50 °C); Controller: Indoor 32 °F to 104 °F |
| Dimensions | Door station: 4.5” W × 4.5” H × 1.2” D; Controller: 6.75” × 4.3” × 1.18” |
| Mounting | Flush or surface (2-gang box); surface-mount bezel and wall bracket included |
| Networking | IPv4/IPv6, DHCP, VLAN, LLDP/CDP, DSCP QoS, STUN/TURN, secondary/tertiary servers |
| Configuration | Web interface (HTTP/HTTPS), auto-provisioning (TFTP/FTP/HTTP/HTTPS), ZTP, SNMP V3 |
| Compliance | RoHS, CE, FCC Class A, CSA/UL, IEC 62368-1 |