The Yeastar S50 is the mid-range workhorse of the S-Series family. Engineered for reliability and scalability, it supports up to 50 extensions and 25 simultaneous calls, making it the perfect fit for established small-to-medium enterprises (SMEs). The S50 stands out with its unique modular design, allowing you to add up to 4 internal modules to support a combination of analog lines (FXO), analog stations (FXS), ISDN BRI, or GSM/3G/4G cellular connectivity.Powered by high-performance industrial-grade components, the S50 comes pre-equipped with a full suite of enterprise features—including call recording, automated attendant (IVR), call queuing, and multi-level auto-provisioning for IP phones. With the integrated Linkus Unified Communications App, your team can turn their mobile phones or desktops into office extensions, ensuring seamless collaboration whether they are in the office or working remotely.Key Features:50 Users / 25 Concurrent Calls: Robust capacity designed for busy office environments and call centers.4 Modular Slots: High flexibility to mix and match FXS, FXO, BRI, and Cellular modules as your business grows.Unified Communications: Full support for Linkus App, enabling voice, messaging, and presence on mobile and desktop.Enterprise Features Included: Standard access to Call Recording, IVR, Voicemail-to-Email, and Conference Bridge with zero licensing costs.1U Rack-Mountable: Standard 19-inch form factor for easy integration into professional networking racks.Technical SpecificationsFeatureSpecificationUsers / Extensions50Concurrent Calls25Max Port Modules4 (Supports FXS, FXO, BRI, GSM/3G/4G)Ethernet Interfaces2 x 10/100/1000 Mbps (LAN/WAN)StorageSD Card Slot for Call Recording & LogsProtocol SupportSIP (RFC3261), IAX2Transport ProtocolUDP, TCP, TLS, SRTPDimensions340mm (W) x 210mm (D) x 44mm (H)Weight1.48 kg
