Screen Size

5″

Audio Features

Poly HD Voice; Poly Acoustic Clarity technology provides full duplex conversations, acoustic echo cancellation, and background noise suppression; Poly Acoustic Fence technology eliminates background noise when using a handset or wired headset, Poly NoiseBlockAl technology removes most background noise when using the speakerphone, TIA-920 wideband audio, type 1 compliant (IEEE 1329 full duplex); Individual volume settings with visual feedback for each audio path; Voice activity detection: Comfort noise generation; DTMF tone generation (RFC 2833 and in-band); Low delay audio packet transmission: Adaptive jitter buffers

Audio codecs

G.711 (A-law and μ-law); G.722; G.7221; G.729AB; ILBC; OPUS

VoIP Features

24 lines (SIP registrations); IETF SIP (RFC 3261 and companion RFCs)

Ports

1 USB 2.0 Type-A (for media and storage applications): 2 RJ-45 (10/100/1000BASE-TX Mbps)

Headset Ports

1RJ-9; 1Electronic Hook Switch (EHS) port for optional adapter

Headset and Handset Compatibility

Compatible with commercially available TTY adapter equipment; Compliant with ADA Section 508 Subpart B 1194.23 (all); Hearing aid compatibility to ITU-TP.370 and TIA 504A standards; Hearing aid compatible (HAC) handset for magnetic coupling to hearing aids; USB Type-A headset support