| Ports | 1 FXS Port |
| Telephony Interfaces | RJ11 |
| LAN | 1 10/100Mbps |
| Micro USB Port | 1 |
| Protocol | SIP (RFC3261) |
| Transport | UDP, TCP, TLS, SRTP |
| Codec | G.711 (alaw/ulaw), G.729A/B |
| DTMF Mode | RFC2833, SIP Info, In-band |
| Voice Capability | ITU-T G.168 LEC Echo Cancellation, Dynamic Jitter Buffer |
| Fax | T.30 Pass-through |
| QoS | DiffServ, ToS, 802.1 P/Q VLAN tagging |
| Network | DHCP, OpenVPN, PPPoE, Static Route, VLAN |
| Network Protocol | FTP, TFTP, HTTP, HTTPS, SSH |
| Management Protocol | TR-069* |
| Signaling | FXS Loop Start, FXS Kewl Start |
| Caller ID | BELL202, ETSI (V23), NTT (V23-Japan), and DTMF-based CID |
| Disconnect Methods | Busy Tone, Polarity Reversal |
| Power | DC 5V 1A |
| Dimensions (L × W × H) (mm) | 85 x 58 x 24 |
| 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 |
| Compatibility | Interoperable with 3CX, Asterisk, Lync Server, FreePBX and certified with Elastix and BroadSoft |