- 300 Users (expandable to 500)
- 60 Concurrent Calls (expandable to 120)
- Up to 24 FXS/FXO/BRI Ports
- Up to 6 GSM/CDMA/3G/4G Channels
- Up to 3 E1/T1/PRI Ports
upport up to 500 users, Yeastar S300 delivers enterprise-class IP telephony services with a strong presence in scalability, mobility, 3rd-party integration, unified communications, and the ease of use and management.