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General| Ports | 4 FXS ports |
|---|---|
| Echo Cancellation | Yes |
| Network Interface | 1 x 10/100Mbps Ethernet port |
| Protocols | SIP, RTP, RTCP |
| Voice Codecs | G.711, G.726, G.729A, G.723.1 |
| Fax Over IP | T.38 |
| Telephony Features | Caller ID, Call Waiting, Call Forwarding, 3-way Calling |
| Call Features | Call Waiting, Caller ID, Call Forwarding, Three-Way Conferencing |
| DTMF | In-band, SIP INFO |
| LED Indicators | Power, Internet |
| Power | AC adapter |
| Input Power | 100-240V AC, 50/60Hz |
| Output Power | 12V DC |
| Operating Temperature | 0°C to 40°C |
| Operating Humidity | 10% to 90% non-condensing |
| Compliance | FCC, CE, RoHS |
