S50
Yeastar S50 VoIP PBX
Full-featured rack-mountable IP-PBX built for small business Win with superior UC capacity and next-level efficiency





Small Business Communications, Without Compromise
Support up to 50 users, the rack-mountable Yeastar S50 and S50i are two PBX versions that boast the same feature range yet different hardware supports. They come with complete call handling features, advanced Unified Communications capacity, and rich built-in APIs to empower small business communications without compromise.
- 50 Users
- 25 Concurrent Calls
- 50 VoIP Trunks
- Complete PBX Features
- Linkus UC Clients Support
Flexible Modular Design
All the telephony interfaces are modular and customizable on S50, which supports 4 onboard module slots to customize FXS, FXO, ISDN BRI, GSM/3G/4G interfaces. Note: the telephony modules are not supported on S50i.

