---
product_id: 470823322
title: "Yeastar S20 - PBX Business Phone System (Barebones) (No modules)"
brand: "yeastar"
price: "€ 144.15"
currency: EUR
in_stock: false
reviews_count: 1
url: https://www.desertcart.de/products/470823322-yeastar-s20-pbx-business-phone-system-barebones-no-modules
store_origin: DE
region: Germany
---

# 10 concurrent calls max Supports GSM/3G & ISDN BRI 2 modular onboard slots Yeastar S20 - PBX Business Phone System (Barebones) (No modules)

**Brand:** yeastar
**Price:** € 144.15
**Availability:** ❌ Out of Stock

## Summary

> 📞 Elevate your small business calls with modular mastery!

## Quick Answers

- **What is this?** Yeastar S20 - PBX Business Phone System (Barebones) (No modules) by yeastar
- **How much does it cost?** € 144.15 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/470823322-yeastar-s20-pbx-business-phone-system-barebones-no-modules)

## Best For

- yeastar enthusiasts

## Why This Product

- Trusted yeastar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Modular Flexibility:** Customize your ports with 2 onboard slots for FXS, FXO, GSM & more
- • **SOHO-Ready Simplicity:** Plug-and-play setup designed for small offices and home businesses
- • **Scalable Telephony Power:** Start lean with 10 calls, expand as you grow
- • **Future-Proof Connectivity:** Supports diverse telephony interfaces including ISDN BRI and GSM/3G
- • **Reliable Business Backbone:** Robust VoIP PBX system engineered for under 20 users with seamless call handling

## Overview

The Yeastar S20 is a compact, modular VoIP PBX system designed for small businesses with up to 20 users. It supports 10 simultaneous calls and offers flexible telephony interface options via 2 onboard module slots, including FXS, FXO, ISDN BRI, and GSM/3G. Ideal for SOHO environments, it combines easy setup with scalable, future-ready communication capabilities.

## Description

S20 is a stand-alone telephone system offering an unrivalled 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.

Review: Very simple to configure for a soho pbx

## Features

- Yeastar S-Series VoIP PBX provides flexible telephony interfaces combination while allowing for future scalability with unique modular design. Besides the built-in rich SIP capabilities, S-Series lets you decide what types of extensions and physical trunks you need in your telephone system. When your business grows, adding more users and concurrent calls is also possible with S-Series. With Yeastar S-Series, all the telephony interfaces are modular and customizable, whether it’s FXS, FXO, ISDN BRI, GSM/3G, or E1/T1/PRI. S20 has 2 onboard module slots.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07S6SCC86 |
| Guaranteed software updates until | unknown |
| Item model number | YST-S20 |
| Manufacturer | Yeastar |
| Package Dimensions | 26.67 x 18.54 x 6.1 cm; 680 g |

## Product Details

- **Answering system type:** Digital
- **Brand:** YEASTAR
- **Colour:** Black
- **Compatible devices:** [INCOMPLETE]
- **Conference call capability:** 2 way
- **Dialler type:** Single Keypad
- **Item weight:** 0.68 Kilograms
- **Material:** Plastic
- **Power source:** Corded Electric
- **Telephone type:** Corded

## Images

![Yeastar S20 - PBX Business Phone System (Barebones) (No modules) - Image 1](https://m.media-amazon.com/images/I/71hk-ojBkhL.jpg)
![Yeastar S20 - PBX Business Phone System (Barebones) (No modules) - Image 2](https://m.media-amazon.com/images/I/61WJ+1rtxyL.jpg)
![Yeastar S20 - PBX Business Phone System (Barebones) (No modules) - Image 3](https://m.media-amazon.com/images/I/61xQQte2C8L.jpg)
![Yeastar S20 - PBX Business Phone System (Barebones) (No modules) - Image 4](https://m.media-amazon.com/images/I/71RmDKKKgzL.jpg)
![Yeastar S20 - PBX Business Phone System (Barebones) (No modules) - Image 5](https://m.media-amazon.com/images/I/51+rg9UGhwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by F***O on 10 April 2025*

Very simple to configure for a soho pbx

## Frequently Bought Together

- Yeastar S20 - PBX Business Phone System (Barebones) (No modules)
- YEASTAR YST-O2-2 FXO Ports Module, 2 FXO Ports, Ethernet, Compatible with PBX Series & Asterisk, Red, 1 Pound, Business Use
- Yealink T33G IP Phone, 4 VoIP Accounts. 2.4-Inch Color Display. Dual-Port Gigabit Ethernet, 802.3af PoE, Power Adapter Not Included (SIP-T33G)

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-08*