Unify Mediatrix 4102. Voice codecs: G.729A,G.729B,G.723.1,G.168,G.726,G.711, Fax compatibility: ITU-T G3. VoIP protocols: SIP – RFC3261, MGCP/NCSSIP over TLS, TCP, UDP, OCSP, ANAT, SDP, Management protocols: GUI, FTP, TFTP, HTTP/HTTPS, SNMPv1, v2, v3, TR-069, TELNET, SSH, TR-104. Security algorithms: 128-bit AES,256-bit AES,HTTPS,3DES,MD5,SHA-1,SIPS,SNMP,DES. Output voltage: 12 V. Dimensions (WxDxH): 127 x 99 x 31 mm, Weight: 170 g