Product features

• Number of GSM channels (Max): 1
• Network type: 850/900/1800/1900MHz
• Protocol: SIP (RFC3261), IAX2
• Transport Protocol: UDP,TCP,TLS,SRTP
• DTMF: RFC2833, SIP INFO, In-band
• Codec: G.711 a/u-law, G.722, G.726, G.729a, GSM, ADPCM, Speex
• Echo Cancellation: ITU-T G.168 LEC
• LAN:  1 (10/100 Mbps)
• Network:  Static IP, DHCP Client, Firewall, VLAN, DDNS, QoS, OpenVPN
• NAT Traversal:  Static NAT, STUN
• Size:  110x70x24mm
• Power Supply: AC 100~240V/50~60Hz (DC 12V, 1A)