2 Line appearances Programmable keys that come preprogrammed and labelled with default values: Callers, Redial and Transfer 4-way navigation with Select/OK key Dedicated function keys including: Transfer, Callers List, Hold, Redial, Goodbye, Options, 2 volume keys, Mute (with LED) and Speaker (with LED) Monochrome LCD: 2.75" 128x48 pixel graphical display XML support Headset Mode Support (next softver version) Aastra Hi-Q™ Audio Technology Full-duplex quality speakerphone Hearing aid compatible (HAC) handset Codecs: G.711 μ-law / A-law, G.729, G.722, AMR*, AMR-WB(G.722.2)*, G.726, iLBC, BV16, BV32, L16 Extensive SIP standards compliance TR-069 support Dual 10/100 Mbps Ethernet ports Quality of Service support Mass deployment via central provisioning of user configuration files – TFTP, FTP, HTTP, HTTPS PoE Class 1