Cisco 8-Port Telephony Gateway. Supported network protocols: TCP/IP, PPTP, UDP/IP, L2TP, ICMP/IP, IPSec, PPPoE. Security algorithms supported: 256-bit AES, HTTPS, VPN support: Pass-Through IPSec ESP, PPTP, L2TP, Authentication method: EAP-TLS, EAP-TTLS, EAP-PEAP. Dimensions (WxDxH): 170 x 220 x 39 mm, Weight: 1.3 kg. Power requirements: 100-240v - 50-60Hz AC. Operating temperature range (T-T): 0 - 45 °C, Storage temperature range (T-T): -20 - 85 °C, Operating relative humidity range: 10 - 90 %