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General| Ports | 4 FXS ports |
|---|---|
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| NAT Router | Yes |
| Protocols | HTTP/HTTPS, ARP, ICMP, DHCP, DNS, TFTP, NTP, RTP/RTCP, SRTP |
| Voice Codecs | G.711, G.726, G.729A |
| Fax over IP | T.38 |
| Operating Humidity | 10% to 90% (non-condensing) |
| Compliance | FCC, CE, RCM |
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