S50 VoIP PBX 

S50 is a compact and full-featured IP-PBX that comes in a 19’’ 1U rack-mountable chassis. The advanced module-based S50 is capable of supporting ISDN BRI, PSTN, and GSM connectivity, providing VoIP communications for up to 50 users.

Flexible Modular Design

With Yeastar S-Series, all the telephony interfaces are modular and customizable. Besides the built-in rich SIP capabilities, S50 support 4 onboard module slots to custom FXS, FXO, ISDN BRI, GSM/3G/4G with unique telephony modules.

- Fast installations with advanced auto-configuration, 

  auto-detect and plug and play capabilities. 

- Control your phone system with intuitive Web GUI. 

- Instantly alert through email, SMS, and phone call. 

- Managed easily from PC, phone, or any Internet-enabled device.

Bulk IP Phone Auto Provisioning.

Saving time by configuring mainstream IP phones in bulk, including user information, local phone book,  firmware and so on.

New Features+ Existing Rich Features ( No License Fee)

Powerful Extending Features with APP Center

Independent from the main framework of the S-Series VoIP PBX system, App Center allows you to easily install, upgrade and manage all apps on PBX with a simple click.

Yeastar Linkus Mobile Client - Your Free Mobile Extensions

Coordinated with S-Series VoIP PBX, the free Linkus Mobile Client makes your Android or iOS mobile phone an office extension and links you and your colleagues and customers anywhere anytime. 

Combine S-Series With Existing Traditional PBX

Multi-Site & Branch Offices

VoIP Solution for SMBs

Superior Customer Services

- 3 year Warranty
- Free firmware upgrade for life
- 24 hours Technical support through phone calls, emails, skype, and remote assistance
- Various training, including sales and technical training like online Webinar
- Customizable products with OEM/ODM service

Shipping

- Within 2-3 days after the payment
- Support any delivery methods as you require, such as:

About Yeastar

Yeastar specializes in the design and development of innovative telecommunications equipment, including VoIP PBX systems and VoIP gateways for the SMB. Founded in 2006, Yeastar has established itself as a global leader in the telecommunications industry with a global partner network and over 100,000 customers worldwide. Yeastar products have been consistently recognized in the industry for their high performance and innovation. For more information about Yeastar or to become a Yeastar partner, please visit

Yeastar factory applies SMT craft with strict quality control is consistent with ISO 9001 Quality Accreditation.

Yeastar in the World

Yeastar attends professional exhibitions together with distributors every year, such as, CeBIT, ITEXPO EAST, GITEX in Dubai, Convergence India, Elastix World, BroadSoft Connections, CommunicAsia...ect.