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Make sure this fits by entering your model number. S20 Advanced communication features to create effective business communication experience for small business, connecting to traditional lines, VoIP lines, and cellular networks SIP Ext max 20 Concurrent call max 10 Analog Ports: max 4 FXS/FXO ports BRI Ports: max S20 Advanced communication features to create effective business communication experience for small business, connecting to traditional lines, VoIP lines, and cellular networks. SIP Ext max. 20 Concurrent call max. 10 Analog Ports: max. 4 FXS/FXO ports BRI Ports: max. 4 BRI ports GSM Ports max. 1 GSM port Storage Build-in TF Card Expand Slot. |
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Features |
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| - Up to 20 users and 10 concurrent calls
- Includes 20 SIP trunks
- Add module cards to activate additional ports up to 4 Analog, 4 BRI, and 1 GSM
- Includes 5,000 minutes of expandable voicemail storage
- Built-in call recording capability
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