10/100M ethernet interface
Protocol: IEEE 802.3az, IEEE 802.1Q (VLAN)
Rate: 10 / 100 m adaptive, full / half duplex fully adaptive
MAC address table: 4096 MAC addresses can be learned
Physical interface: RJ45 seat supports auto mdix
FXS Phone Interface
Ring voltage: 75V
Ring frequency: 25HZ
Two-line Impedance: 600 Ohm (pick up)
Return loss: 40 dB
FXO Switch Interface
Ring detect voltage: 35V
Ring detection frequency: 17HZ-60HZ
Two-line Impedance: 600 Ohm (pick up)
Return loss: 40 dB
EM 2/4 Line
AD: 0dB
DA: 0dB
Two/Four-line Impedance: 600 Ohm
Return loss: 20 dB
Environmental indicators
Operating temperature: – 10 ℃ – + 60 ℃
Storage temperature: – 40 ℃ – + 85 ℃
Working humidity: 0% – 95% (no condensation)
MTBF: > 100000 hours