Yeastar P520 IP PBX

• Users / Extensions: Max 20 users

• Concurrent Calls: Max 10 concurrent calls

• Call Center Agents: Max 20 agents

• Telephony Ports (Modular / Optional):

• Max FXS Ports: 4 (for analog phones/faxes)

• Max FXO/BRI Ports: 4 (for PSTN or ISDN BRI lines)

• Max GSM/3G/4G Ports: 1 (with antenna socket)

• Module Slots: 2 onboard module slots