| Specifications | |
| Ports | 4 FXO Ports |
| Telephony Interfaces | RJ11 |
| LAN | 1 10/100Mbps |
| Protocol | SIP (RFC3261), IAX2 |
| Transport | UDP, TCP, TLS, SRTP |
| Codec | G.711 (alaw/ulaw), 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.30 |
| QoS | DiffServ, ToS, 802.1 P/Q VLAN tagging |
| Network | DHCP, DDNS, OpenVPN, PPPoE, Static Route, VLAN |
| Network Protocol | FTP, TFTP, HTTP, HTTPS, SSH |
| Management Protocol | TR-069* |
| Signaling | FXO Loop Start, FXO Kewl Start |
| Caller ID | BELL202, ETSI (V23), NTT (V23-Japan), and DTMF-based CID |
| Disconnect Methods | Busy Tone, Polarity Reversal |
| FXO Connectivity | Programmable AC Impedance, Hangup Detection, Answer Detection, Caller ID Detection |
| Power | 12V, 1A |
| Dimensions (L × W × H) (mm) | 200 × 137 × 25 |
| 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, Wall-mount |
| Compatibility | Interoperable with 3CX, Asterisk, Lync Server, FreePBX and certified with Elastix and BroadSoft |
| Features | |
| API | Call Back |
| Attack Alert | Auto Provisioning with Yeastar IP-PBX |
| Backup and Restore | Call Detail Records |
| Call Status Display | Call Transfer |
| Caller ID Display | Firewall |
| Firmware Upgrade by HTTP/TFTP | Hotline |
| IP Blacklist | Nat Traversal |
| Packet Capture Tool TR-069 | System Logs |
| Web-based Management | Two-stage dialing |
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