E1 interface
Interface standard: Conforms to G.703 standard
Interface rate: N×64Kbps, N:1～32
Code: HDB3
Interface impedance: 75Ω (unbalanced), 120Ω (balanced)
Connecter: BNC (75 Ω), RJ45 (120 Ω)
Vibration characteristic: Satisfies G.742 and G.823 standard
Clock type: internal-clock, line clock
10/100Base-T ethernet port
Rate：10M/100M，full/half duplex self adapt
Protocol: support IEEE 802.3，IEEE 802.1Q(VLAN)
MAC address table: 4096 MAC addresses
Ethernet Total Memory Sizes: 64MBits SDRAM
Physical interface：RJ45, support AUTO-MDIX(cross over and straight through self adapt)
Voice port
FXS phone port
Ring voltage：75V
Ring frequency：25HZ
Two line input impedance：600Ω(hanging off)
Wastage：40 db
FXO switch port
Ring test voltage：35V
Ring test frequency：17HZ-60HZ
Two line input impedance：600Ω(hanging-off)
Wastage：40 db
RS232 port
Rate： 300－115.2Kbps auto-adaptable (Asynchronous)
Interface characteristic： satisfies ITU-T V.24 standard
Connector：RJ45
4 dimension
standalone: 483（L）×140（W）×50（H）mm
5 Working Condition
Input voltage: AC180V ~ 240V ;DC-48V;DC+24V
Power consumption: ≤5W
Operating temperature: 0°C ~ 50°C
Storing temperature: －40°C ~ +70°C
Relative humidity: 95 %
