Yeastar S-Series VoIP PBX (VoIP Phone System)

Performance and Power

Easy to use, reliable, and feature-rich, S-Series is designed to help small and medium businesses make a giant leap in efficiency and cost savings. The innovative S-Series unleashes the power of unified communications, provides great flexibility with field-upgradable modular design, and allows you to connect to traditional lines, VoIP lines, and cellular networks. Perfectly future-proof, S-Series converges business-enhancing features with free software updatesto grow with your business and assures reliability over the years.

Integrate Yeastar PBX with Microsoft Teams

Add enterprise voice. Deliver a complete UC&C solution.

As Microsoft Teams surpassed 75 million daily active users, Yeastar now integrates with Teams to make enterprise-grade calling capabilities of Yeastar PBX System (S-Series VoIP PBX, Cloud PBX, and K2 IP-PBX) available to Teams users. With the direct routing technology, users on Yeastar PBX System and Teams can seamlessly communicate with others like regular extensions do, making it a perfect fit for businesses with a mix of Teams and non-Teams users.



Telephone System without Risk

S-Series is built with the future in mind, utilizing the latest technology advances, from Freescale industrial grade Quad Core processors, TI DSP voice processors, and long-life power units and lightning protection.

Play Safe and Expect Reliability

With advanced failover, security, monitoring and reporting capabilities as standard, combined with an internal firewall and with support for TLS and SRTP encryption, there has never been such a robust system.

Accessible Across Devices

Yeastar PBX System has strong built-in anti-hacking mechanisms to mitigate security threats and safeguard your business communication, including incorporated firewall, IP auto defense system, blacklist&whitelist, as well as event notification for the security audit.

Your Choice of Technologies and Features

With a unique modular design, the S-Series will install into the most demanding of environments. You can also take advantage of advanced enterprise-grade features with the fullest and most complete software versions.

Accessible Across Devices

Yeastar PBX System, together with Linkus UC softphone, delivers consistent communication for anywhere workers. You can take cell phones or desktops to make and receive business calls, transferring calls among devices, check voicemails, and start an ad-hoc conference.

Collaborative Among the Staff

Besides voice, Linkus also supports IM, presence, and integration with Salesforce CRM, Microsoft Dynamics 365, Outlook Contacts and Google Contacts, to engage your customers, make them more accessible to customers, and keep the whole team on the same page.

Easy to Set up and Administer

The sleek and robust web GUI makes the initial setup a breeze. It only takes minutes to get your phone system up and running. Configurations including auto phone provisioning, call routing, security, etc., can all be performed on the interface with a few clicks.

Packed with Extensive Features

Yeastar PBX System boasts a lengthy list of enterprise-grade features, covering everything SMEs would ask for in daily communication. Call forwarding, call queue, ring group, auto attendant, conference, voicemail, and more are all provided at no additional cost.

Scalable to Growing Needs

Yeastar PBX System is capable of serving SMEs from 20 to 2,000 users and grows with the pace of your business as you add new users or locations. You can trust in Yeastar PBX System to take care of your changing business communication needs and enjoy increased efficiency.

Managed from a Distance

Regardless of your location, you can remotely manage and automatically monitor multiple Yeastar PBX Systems with the remote management tool, which proactively identifies and instantly notifies potential problems before they cause any system issues and business disruption.

Compatible with Current Infrastructure

Yeastar PBX System is fully interoperable with mainstream IP phones, such as Yealink, Snom, and Fanvil, allowing for a seamless migration without sacrificing prior investment. Worldwide SIP trunks are at your choice while connectivity with PSTN is also supported through Yeastar VoIP Gateways.

Secured from Hacks and Attacks

Yeastar PBX System has strong built-in anti-hacking mechanisms to mitigate security threats and safeguard your business communication, including an incorporated firewall, IP auto defense system, blacklist&whitelist, as well as event notification for the security audit.


Compatible with:

  • Yealink Voip phones.
  • Greandstream VoIP Phones.
  • Snom VoIP Phones.
  • Cisco VoIP Phones.
  • Gigaset VoIP Phones.
  • Fanvil VoIP Phones.
  • Polycom VoIP Phones.
  •  Sangoma VoIP Phones.
  • HtekVoIP Phones.
  • Grandstream VoIP ATA / Gateways
  • Patton VoIP Gateway

Yeastar P Series IP PBX

Updated Hardware & Refreshed UI

P-Series PBX System features 3 different capacity options with the full feature set, which are supported by the upgraded and more refined hardware appliances. In addition, we also redesign the management portal interface to bring a fresh modern look with responsive design, live graphs, navigation search bar, etc.


Award-winning PBX System for SME

Voice is the center of business communication, yet today’s business phone system is capable of doing more and delivering greater value. Yeastar PBX System, as part of an advanced unified communications solution, makes enterprise-grade business communication capabilities available to small and medium-sized businesses across a wide variety of industries at a fraction of cost. Easy to use and manage, Yeastar PBX System helps SMEs get more done with less effort. The solution is available both in cloud-based and on-premise deployment options.