AT&T SynJ 4-Line Corded/Cordless SMB Phone

The Complete, Scalable Communication Solution for Growing Businesses

The AT&T SynJ 4-Line Corded/Cordless Phone System is a professional-grade, hybrid telephony solution engineered for small to medium-sized businesses that demand robust features, exceptional mobility, and room to grow. As a comprehensive system from the trusted AT&T brand, it combines the reliability of a corded base with the flexibility of cordless handsets and desksets, supporting up to 4 analog lines and 11 users right out of the box . It is specifically designed for offices, retail stores, medical practices, and any business environment where staying connected while away from the desk is essential for productivity and customer service.

Core Technology: DECT 6.0 Clarity and Unmatched Wireless Range

At the heart of the SynJ system is advanced DECT 6.0 technology, operating in the dedicated 1.9GHz frequency band to deliver superior voice and sound quality while providing high protection against interference and wiretapping . This technology ensures crystal-clear conversations without disrupting wireless routers or other office equipment. The system's defining feature is its exceptional extended cordless range. By adding up to six optional DECT 6.0 repeaters, you can extend cordless mobility up to half a mile, allowing employees to stay connected throughout even the largest facilities, warehouses, or campus environments .

Comprehensive Feature Set for Professional Call Management

The SynJ system is packed with sophisticated features designed to streamline business communications. A standout capability is the Auto Attendant on each line, which answers outside calls, provides callers with a company directory, and routes them to the appropriate extension, projecting a professional image 24/7 . The Push-to-Talk Intercom feature enables instant, walkie-talkie-style communication between handsets, desksets, and the base station—even when lines are in use for external calls—facilitating quick internal coordination . The built-in Digital Answering System offers up to 180 minutes of recording time with individual and group voicemail boxes for each extension, ensuring messages are managed effectively .

Flexible System Components and User-Friendly Design

Build the system that fits your unique needs with a range of components. The core SB67138 base includes a corded base and one cordless handset . Expand with additional SB67108 cordless handsets for ultimate mobility or SB67148 cordless desksets, which feature a larger, tabletop design with a full keypad and speakerphone for more stationary workstations . All devices boast large, backlit displays and intuitive menus. Key features include:

Call Management: 3-party conferencing, call transfer (consultative and blind), call waiting, caller ID with a 50-name/number log, and a 100-name/number phonebook directory .

User Convenience: Hands-free speakerphone on all units, dedicated 2.5mm headset jacks for corded headsets, mute, hold, and 10 speed-dial numbers .

Business-Grade Features: Music-on-Hold (external connection), Do Not Disturb (DND), and programmable line appearances .

Target Applications: The Ideal Scalable System for Dynamic Small Businesses

The AT&T SynJ system is the definitive communication solution for any small business requiring professional features and the freedom of cordless mobility. It is ideally suited for retail stores where staff need to assist customers while staying reachable, busy medical offices coordinating patient calls, warehouses requiring communication across large spaces, and professional offices with multiple employees and lines. Its modular design allows it to start small and expand as your business grows, offering outstanding long-term value. Backed by an industry-leading two-year warranty, the SynJ system provides the peace of mind and reliability that small businesses need .