Yeastar S20

Yeastar S20 S-Series IP PBX

Overview

The Yeastar S20 IP PBX Kenya solution is built for small businesses that need reliable, affordable telephony without unnecessary complexity. It supports up to 20 users and 10 concurrent calls, making it a strong fit for small offices, retail shops, and startups. As part of Yeastar’s S-Series, the S20 is compact, simple to install, and easy to manage from day one. Net-Top supplies and configures genuine Yeastar S20 systems in Nairobi, and we include local technical support with every installation.

Connectivity & Expansion

The S20 uses two onboard module slots, so you can choose exactly the ports your office needs. It supports up to 4 FXS/FXO/BRI ports and 1 GSM/3G/4G channel, along with 20 VoIP trunks for SIP connectivity. It also includes 2x 10/100 Ethernet ports, and you can mount it either on a desk or a wall. This flexibility means the S20 grows alongside a small office without forcing an expensive upgrade too soon.

Call Management & Features

The S20 includes a full set of everyday telephony features, so your team gets more than just basic calling. It offers call recording, automated attendant (IVR), paging/intercom, and music on hold, plus 5,000 minutes of expandable voicemail storage. Staff can also stay reachable through the Linkus Mobile Client on Android and iOS, turning personal phones into office extensions. Meanwhile, the online Configuration Panel lets you manage the whole system securely from any internet-connected device.

Reliability & Efficiency

Yeastar built the S20 on the proven Asterisk 13 platform, and it carries one of the highest MTBF (Mean Time Between Failures) ratings in the industry. This means fewer breakdowns and less downtime for a small business that can’t afford disruptions. The system also runs on low power, drawing just 1.8–10.6W, and comes with free lifetime software and firmware upgrades — so there are no hidden licensing fees down the line.