Best PBX Phones & Systems of 2026

The Grandstream UCM6301 PBX is designed to handle large communication needs, supporting up to 3000 users and 450 calls at once, making it ideal for busy offices. It simplifies setup with automatic configuration for Grandstream SIP devices, so you can get started quickly without technical hassle. The built-in conferencing and meeting features allow you to connect easily with colleagues or clients through desktop or mobile apps. Plus, the Wave app works across Android, iOS, Chrome, and Firefox, letting you stay connected with all users on the system from anywhere. This makes the UCM6301 a flexible and convenient choice for modern communication.

The NEC SL2100 Phone offers 12 programmable buttons with LED lights, making it easy for you to customize and quickly access your most used functions. Its backlit LCD display with interactive soft keys provides clear information and simple navigation, even in low-light environments. You can enjoy hands-free conversations with the full duplex speakerphone, which lets you hear and be heard clearly without holding the handset. The dual color call indicator lamps help you easily see the status of your calls at a glance. Altogether, these features make the NEC SL2100 Phone a practical and user-friendly choice for your communication needs.

The Grandstream UCM6300A PBX is designed to support up to 1500 users and handle 200 calls at the same time, making it ideal for busy offices. It allows easy setup of Grandstream SIP devices without complicated configurations, so you can get started quickly. The built-in platform offers instant messaging, audio conferencing, and web meetings, which means you can communicate seamlessly from your computer, phone, or SIP device. Additionally, the free Wave App lets you make calls and send messages from your desktop or mobile device, giving you flexibility to stay connected wherever you are.

The Avaya Partner 18D Telephone features 16 programmable buttons with dual LEDs, a 2 line x 24 character backlit tilt display, built-in conference, transfer, hold, and speaker buttons, full duplex speakerphone for hands-free operation, and a built-in port for connecting standard devices like modems or fax machines. With these features, you can easily manage your calls, conduct conference calls, and use hands-free operation to work more efficiently. The backlit display ensures you can read the screen even in low-light conditions.

The Avaya 1416 Phone is a certified refurbished digital telephone that has been thoroughly tested to ensure it works like new. This means you get a reliable device that has been cleaned, inspected, and repackaged for your convenience. It comes with all the necessary accessories and includes at least a 90-day warranty, giving you peace of mind with your purchase. The phone is compatible with Avaya Aura Communication Manager 5.2.1 or later and IP Office Release 6.0 or later, making it easy to integrate into your existing office communication system. Plus, it may arrive in a simple box, focusing on functionality over fancy packaging.

The Grandstream UCM6304A PBX offers a powerful audio-only communication system designed for businesses managing up to 1000 users. It includes four FXO and four FXS ports, making it easy to connect traditional phone lines and devices, giving you flexibility in your setup. With zero-configuration provisioning, you can quickly set up Grandstream SIP endpoints without hassle, saving you time and effort. The built-in messaging and conferencing platform lets you hold audio meetings and send instant messages from your computer, mobile device, or SIP phone, enhancing collaboration wherever you are. Additionally, the free Wave App lets you communicate easily by voice or message on multiple devices, keeping you connected on the go.

The Nortel T7316 Phone offers a ten-line speakerphone, allowing you to handle multiple calls easily without needing a headset. Its dual 16-character LCD display can tilt for better viewing, making it simple to read caller information and manage up to 24 programmable buttons for quick access to your most-used functions. You'll also find a message waiting indicator with a lamp that alerts you to new messages, helping you stay on top of communications. Additionally, the phone includes convenient buttons for hold, release, and hands-free operation, so you can manage calls smoothly and keep your hands free for other tasks.

The Grandstream UCM6302A PBX offers a versatile communication solution for your business. It includes two FXO ports, allowing you to connect traditional phone lines for external calls. Additionally, two FXS ports let you hook up standard analog phones or fax machines, making it easy to integrate with your existing devices. Designed for flexible installation, you can mount it on a wall or place it on a desktop, fitting your workspace needs. This system is ideal if you want a reliable and adaptable phone system that supports both modern and traditional telephony setups.

The Grandstream UCM6302 PBX supports up to 3,000 users and handles as many as 450 calls at the same time, making it ideal for busy offices. It simplifies setup by allowing you to automatically configure Grandstream SIP devices, saving you time and effort. You can also host meetings and conference calls right from the system, which works seamlessly with desktop apps and mobile devices. Plus, with the Wave app available on Android, iOS, Chrome, and Firefox, you can easily stay connected with all users on the network, no matter where you are. This makes communication smooth and convenient for your team.