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- Billing Software for PBX S300 Series
- Billing Software for PBX S100 Series
- Billing Software for PBX S50 Series
- Billing Software for PBX S20 Series
- 16 FXO Ports VoIP Gateway (for PSTN)
- 8 FXO Ports VoIP Gateway (for PSTN)
- 4 FXO Ports VoIP Gateway (for PSTN)
- 24 FXS Ports VoIP Gateway (for Analog Phone)
- 16 FXS Ports VoIP Gateway (for Analog Phone)
- 8 FXS Ports VoIP Gateway (for Analog Phone)
- 4 FXS Ports VoIP Gateway (for Analog Phone)
- CPU Upgrade Card for S100 and S300
- Add 100 SIP Extensions
- Add 30 Concurrent Calls
- 8 Ports Analog Interface Expansion Card for S100/S300
- Up to 4 Module Slots (O2, S2, SO)
- SO Module for both 1 Port FXO and 1 Port FXS Ports
- Support fail-over when power loss
- O2 Module for 2 FXO Ports (for PSTN)
- S2 Module for 2 FXS Ports (for Analog Phone)