📞 Power your business calls with modular freedom and unstoppable growth!
The Yeastar S20 is a barebones VoIP PBX system featuring 2 onboard module slots, supporting a wide range of telephony interfaces including FXS, FXO, ISDN BRI, GSM/3G, and E1/T1/PRI. Designed for scalability, it allows businesses to add users and concurrent calls as they grow, combining modular customization with robust SIP capabilities.
| Conference Call Capability | 2 way |
| Is there Caller ID | No |
| Multiline Operation | Multi-Line Operation |
| Answering System Type | Digital |
| Power Source | Corded Electric |
| Material Type | Plastic |
| Color | Black |
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