Telephone Type: Telephone handset Multiline Operation Capability: Yes Lines Supported: 10 Caller ID: Yes Call Forwarding: Yes Call Hold: Yes Call Transfer: Yes Display Type: TFT LCD display Message Waiting Capability: Yes Hearing Aid Compatible: Yes Network Protocols: SIP VoIP Protocols: Yes Model: Poly Rove 20 Additional Features: Keep your onsite employees safe and productive with ruggedized protection and pro-grade quality handsets integrated with Microban antimicrobial protection. Scale as you grow: Choose from various quantities of handsets to meet your organizations needs and shift sizes. Service & Support Service & Support Type: 1 Year Limited Warranty Special Feature RoHS: Y Green Product Information Energy Star Compliant: Y