Grandstream GXP1630 Gigabit IP Phone with HD Audio & PoE for SMB VoIP Systems Cooler Master 21 litre storage space 21 litre storage space } Model Name CMP 520 ARGB Model Number CP520 KGNN S00 Exterior Color Black Materials – Exterior Steel color: #464feb Specification Details Brand Grandstream Model GXP1630 Product Type Gigabit IP Phone SIP Accounts 3 SIP Accounts Line Keys 3 Line Keys Conference Calling 4 Way Audio Conferencing Display 132 × 64 Backlit Graphical LCD Display Programmable Soft Keys 3 XML Programmable Context Sensitive Soft Keys BLF Keys 8 Dual Colored BLF Speed Dial Keys Audio HD Audio on Handset and Speakerphone Speakerphone Full Duplex Speakerphone Network Interfaces Dual Switched Auto Sensing 10 100 1000 Mbps Ethernet Ports PoE Integrated Power over Ethernet (PoE) Headset Support EHS Support for Plantronics Headsets Contacts Capacity Up to 1000 Contacts Call History Up to 200 Records Security TLS and SRTP Encryption Country of Origin China Warranty 1 Year Manufacturer Warranty