| Specification | Details |
|---|---|
| Ports | 16 × RJ11 FXS Ports, 1 × RJ21 Port |
| Network Ports | 1 × 10/100 Mbps Ethernet, 1 × 10/100/1000 Mbps Ethernet |
| Processor | 1.5 GHz Quad-Core ARM Cortex-A53 |
| Memory (RAM) | 1 GB DDR3 SDRAM |
| Storage | 8 GB SD Card |
| Dimensions | 440 mm × 171 mm × 44.5 mm |
| Mounting Method | 1U Standard Rack Mount |
| Communication Protocol | SIP (RFC 3261) |
| Audio Codecs | G.722, G.711 (u-law / a-law), G.726, G.729, GSM, SPEEX |
| Transport Protocols | UDP, TCP, TLS |
| DTMF Modes | RFC2833, SIP INFO, In-band |
| FXS Signaling | Kewl Start |
| Caller ID | BELL202, ETSI (V23), NTT (V23-Japan), DTMF-based CID |
| Disconnect Methods | Busy Tone, Polarity Reversal |
| Management Features | Web Management, Call Records, System Logs, Ping, TCP Dump, Channel Monitor, CMD CLI, Traceroute, API |
| Power Input | 100 – 240V AC, 50/60 Hz |
| Operating Temperature | 0°C ~ 40°C |
| Storage Temperature | -40°C ~ 70°C |
| Humidity | 10% ~ 90% (Non-condensing) |





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