EnGenius DURAFON‑SIP — Long‑Range SIP Cordless Phone System (Up to 3,000 Acres, TAA Compliant)

When the property is measured in acres rather than square feet — a resort, a ranch, a distribution campus, a military installation — the DURAFON-SIP is the phone system that keeps up. 3,000 acres of outdoor range, 12 floors of in-building penetration, a ruggedized drop-tested handset, 10 SIP accounts, and TAA compliance. Nothing else in the cordless SIP category comes close.

The EnGenius DURAFON-SIP is a TAA-compliant, long-range SIP cordless phone system engineered for expansive properties, rugged industrial environments, and mission-critical voice communication. Delivering up to 3,000 acres of outdoor coverage, 12 floors of in-building penetration, and support for 10 SIP accounts and 10 handsets, the DURAFON-SIP provides unmatched mobility, reliability, and durability where DECT and Wi-Fi phones fall short. Operates on secure 900 MHz FHSS and integrates with any IP-PBX or hosted VoIP provider. TAA compliant for government, defense, and regulated procurement.

Key Features

• TAA Compliant — approved for government and public-sector procurement

• Industry-leading range — up to 3,000 acres outdoors and 12 floors indoors

• SIP-ready — supports 10 SIP accounts and 4 concurrent calls

• Secure 900 MHz FHSS — long-range, interference-resistant communication

• Rugged handset design — drop-tested, shock-resistant, built for industrial use

• Two-way intercom — instant handset-to-handset communication

• Expandable — supports up to 10 handsets per base

• Works with any SIP provider, IP-PBX, or hosted VoIP

Technical Specifications

• Frequency: 900 MHz FHSS

• Range: Up to 3,000 acres outdoors; 250,000 sq. ft. indoors

• Vertical Penetration: Up to 12 floors

• SIP Accounts: 10

• Concurrent Calls: 4 (SIP or PSTN)

• Intercom: 2-way handset-to-handset

• Compatibility: All major SIP platforms

• Durability: Ruggedized handset with reinforced housing

• Compliance: TAA Compliant, FCC

Ideal Use Cases

• Government and public-sector facilities

• Large campuses and multi-building properties

• Warehouses, distribution centers, and logistics

• Agriculture, ranches, and outdoor operations

• Hotels, resorts, and hospitality

• Manufacturing plants and industrial sites

• Auto dealerships and retail floor operations

What's Included

• DURAFON-SIP Base Unit

• Rugged handset

• Battery pack

• Charging cradle and AC adapter

• Belt clip

• 2 x Handset antennas (low-profile and high-gain)

• Base antenna

• Quick Start Guide

Compliance & Warranty

• FCC certified | TAA Compliant

• EnGenius 1-Year Limited Warranty