Your telecommunications partner in Ireland

Designed with the small and medium sized enterprises in mind, supporting up to 500 users and built using the very latest technology, the Yeastar S-Series delivers exceptional cost savings, and productivity and efficiency improvements to small and medium sized businesses, delivering power, performance, quality and peace of mind.


With the latest software upgrade to Asterisk 13 which is packed with new features, the Yeastar S-Series delivers greater productivity improvements for your business, and with no ongoing software subscription costs, ever.



S20 is a stand-alone telephone system offering an unrivaled range of features to small business with less than 20 users. It supports 10 concurrent calls and various combinations of telephony ports including FXS, PSTN, ISDN BRI, and GSM/CDMA/3G.


• 20 Users

• 10 Concurrent Calls

• Up to 4 FXS/FXO Ports

• Up to 4 BRI Ports

• Up to 1 GSM/CDMA/3G Channel

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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.


• 50 Users

• 25 Concurrent Calls

• Up to 8 FXS/FXO Ports

• Up to 8 BRI Ports

• Up to 4 GSM/CDMA/3G Channels

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S100 is a cost-effective business communication system with a base configuration of 100 users and 30 concurrent calls and can scale up to 200 users and 60 concurrent calls. The flexible S100 comes with support for analog ports, ISDN BRI, E1/T1/PRI, and GSM networks.


• 100 Users (expandable to 200)

• 30 Concurrent Calls (expandable to 60)

• Up to 16 FXS/FXO Ports

• Up to 16 BRI Ports

• Up to 6 GSM/CDMA/3G Channels

• Up to 2 E1/T1/PRI Ports


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S300 delivers enterprise-class IP telephony services with a base configuration that supports 300 users. Expandable to 500 users, S300 grows with your business and supports up to 24 analog ports, up to 24 BRI ports, up to 3 E1/T1/PRI ports, and up to 6 GSM channels.


• 300 Users (expandable to 500)

• 60 Concurrent Calls (expandable to 120)

• Up to 24 FXS/FXO Ports

• Up to 24 BRI Ports

• Up to 6 GSM/CDMA/3G Channels

• Up to 3 E1/T1/PRI Ports


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S-Series - Features



The Yeastar S-Series is designed to help you grow your business by providing plenty business-enhancing system features and functions.


• App Center

• AutoCLIP

• Auto Provision IP Phones

• Automated Attendant (IVR)

• Blacklist/Whitelist

• Billing App

• Call Back

• Call Detail Records (CDR)

• Call Monitor

• Call Recording

• Call Routing

• Call Transfer

• Conference

• Distinctive Ringtone

• Emergency Number

• Event Center

• Email to SMS/SMS to Email

• Fax to Email

• Find Me/Follow Me

• Hot Standby

• Import/Export Extensions

• LDAP Server APP

• Mobility Extension

• Music on Hold

• Queue

• Ring Goup

• SIP Forking


• Speed Dial

• Time Condition

• User Portal

• User Privileges

• Video Calls

• Voicemail

• Voicemail to Email

• VPN Server App


Learn more about features on the Yeastar website.

Have you heard about Linkus?

Linkus is a VoIP Mobile Client coordinated with Yeastar S-Series VoIP PBX that makes your Android or iOS mobile phone an office extension and links you and your colleagues and customers anywhere anytime.


Find out more here. . .

Authorised Distributor for.....

Multinet Systems Ltd., 1 Anglesea Lane, Corrig Avenue, Dun Laoghaire, Co. Dublin, A96 VK65.   T: +353 1 6854840  E: