Basics:

Operating system: Linux
Dimensions (L × W × H, approx.) without foot-stand 205 mm × 185 mm × 40 mm
DisplayTFT liquid crystal display (LCD)
graphical, high-colour, backlit
Size (diagonal): 2.8” (67 mm)
Size (W × H): 59 mm × 33 mm
Resolution: 320 × 240 pixel
5 LED indicators
38 hard keys in total
Power over Ethernet (PoE) IEEE 802.3af, class 3

Software:

6 SIP identities / accountsUp to 6 simultaneous calls
G.711 (A-law, µ-law), G.722, G.726, G.729, GSM 6.10 (FR), Opus
Secure Redirection And Provisioning Service (GRAPE) support
Plug & Play (PnP) support
Remote management via TR-069 / TR-069 Annex G (TR-111)
TLS V1.2, HTTPS, IEEE 802.1X (EAPoL)
Pv4 / IPv6 (dual stack), DHCP, NTP, LDAP, LLDP-MED, HTTP, TFTP, L2TP