Adtran Total Access 904 (2nd Gen). Management protocols: SIP, MGCP, SNMP v2/v3, Routing protocols: IP. Security algorithms supported: SSH, Authentication method: RADIUS, RSA SecureID, LDAP. Networking features: 10/100BASE-T. Dimensions (WxDxH): 317.5 x 190.5 x 43.688 mm, Weight: 1587.57 g. Power requirements: 120 VAC, 60 Hz