CATEGORY Yeastar IP-BPX S-Series IP-PBX S-20 Compact entry-level small business phone system Easy to use, reliable and feature-rich S-50 Full-featured rack-mountable IP-PBX built for small business, With superior UC capacity S-100 Simple, powerful and scalable IP-PBX system Designed for SMBs with less than 200 users S-300 Enterprise-class IP-PBX system built to perform, Supports 300 users and expandable to 500 users.
