Description
Yeastar S50 S-Series – Powerful IP PBX for Small and Medium Businesses
The Yeastar S50 S-Series IP PBX is a modular, rack-mountable VoIP system built specifically for small and medium-sized enterprises. It supports up to 50 users, 25 concurrent calls, and 50 SIP trunks. Thanks to its scalability and flexible design, it becomes an ideal communication hub for growing businesses. Moreover, the system offers exceptional reliability, robust security, and intuitive management tools, making it a long-term investment for any organization.
One of the standout advantages of the Yeastar S50 is its four onboard module slots, which you can configure to match your exact needs. For instance, it supports up to 8 FXS, 8 FXO/BRI lines, or 4 GSM/3G/4G channels. As a result, you can easily blend modern VoIP capabilities with legacy analog or PSTN lines. This flexibility ensures a smooth upgrade path for businesses transitioning from older phone systems. In addition, its 1U rack-mount chassis includes dual Gigabit Ethernet ports, an SD card slot, and antenna ports, which together enable efficient deployment in a wide range of professional environments.
Advanced Communication Features
The S50 supports SIP and IAX2 protocols and works with advanced audio codecs such as G.711, G.722, G.729A, GSM, Speex, ADPCM, and iLBC. Furthermore, it supports video codecs like H.264, MPEG-4, and H.263, allowing for multimedia communication. Built-in features include IVR, call queues, conferencing, voicemail-to-email, paging, fax-to-email, and mobile extensions through the Linkus UC Client. Because these functions are pre-installed, businesses can immediately enjoy professional-grade communication without purchasing extra licenses.
Security & Integration
To safeguard communications, the Yeastar S50 features an internal firewall, TLS/SRTP encryption, and VPN server support. In addition, it integrates seamlessly with CRM and PMS platforms, making it suitable for industries ranging from hospitality to corporate offices. The built-in App Center further extends its functionality with add-ons such as hotel management, LDAP, and billing. Consequently, businesses benefit from a fully integrated and secure communication solution.
Yeastar S50 S-Series Reliable Hardware & Easy Installation
Under the hood, the S50 runs on an industrial-grade Freescale quad-core CPU with a TI DSP engine, ensuring consistent performance. Moreover, it operates at a power consumption range of just 2W to 18W, keeping operational costs low. The intuitive web-based Metro UI supports plug-and-play provisioning, auto-provisioned extensions, and remote management through the Yeastar Remote Management tool. Therefore, administrators can set up and maintain the system quickly and efficiently.
Cost-Effective & Future-Proof
The Yeastar S50 comes with free lifetime firmware updates and no hidden licensing costs. Additionally, it typically includes a 3-year manufacturer warranty, ensuring long-term peace of mind. In conclusion, it offers a low total cost of ownership while providing a powerful, secure, and adaptable communication platform for small and medium businesses.

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