- Ports: 16 FXO Ports
- Telephony Interfaces: RJ11 and RJ21 50-pin Telco Connectors
- Network Interfaces: 1 x 10/100Base-T Ethernet
- Protocol: SIP (RFC3261), IAX2
- Transport: UDP, TCP, TLS, SRTP
- Codec: G.711, G.722, G.723, G.726, G.729A, GSM, ADPCM
- Voice Capability: ITU-T G.168 LEC Echo Cancellation, Dynamic Jitter Buffer, VAD, CNG, PLC
- DTMF Mode: RFC2833, SIP Info, In-band
- Fax: T.38 and Pass-through
- QoS: DiffServ, ToS, 802.1 P/Q VLAN tagging
- Network: DHCP, DDNS, Open VPN, PPPoE, Static Route, VLAN
- Network Protocol: FTP, TFTP, HTTP, HTTPS, SSH
- Management Protocol: RADIUS, TR-069*
- Signaling: FXO Loop Start, FXO Kewl Start
- Caller ID: BELL202, ETSI (V23), NTT (V23-Japan), and DTMF-based CID
- FXO Connectivity: Programmable AC Impedance, Hang-up Detection, Answer Detection, Caller ID Detection
- Disconnect Methods: Busy Tone, Polarity Reversal
- Power: AC 100-240V (12V 5.5A)
- Humidity: 10-90% non-condensing
- Storage Range: -20°C to 65°C, -4°F to 149°F
- Operation Range: 0°C to 40°C, 32°F to 104°F
- Mounting: Desktop, Rack-mount
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