Number of Telephony Ports: 8
Phone Interface: 8 x RJ11 FXS ports
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
FAX over IP: T.38 and pass-through
Signalling: Kewl Start, Loop Start
Caller ID: BELL202, ETSI (V23), NTT (V23-Japan), and
DTMF-based CID
Disconnect Method: Busy Tone, Polarity Reversal
LAN: 1 (10/100Mbps)
Network: Static IP, DHCP Client, Firewall, VLAN, DDNS,
QoS, OpenVPN
NAT Traversal: Static NAT, STUN
Size: 200 (L) mm ?? 137 (W) mm ?? 25.6 (H) mm
Power Supply:12V 1.5A
Operation Range: 0? to 50?C, 32? to 122? F
Storage Range: -20? to 65?C, 4? to 149? F
Humidity: 10-90% non-condensing