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 Free lifetime software/firmware upgrades Connect multiple sites and remote users instantly Low power consumption at 1.8-10.6W Automated attendant (IVR) Email to SMS/SMS to email