E1 interface
Bit rate: 2048Kbps
Code type: HDB3
Interface impedance:75ohm
Connector:CC4
10BASE-T interface
Interface type:10Base-T
Interface velocity:10Mbps
Transmission velocity:N*64Kb/s (N = 1~30)
Protocol:bridge connection of link layer
User and loop interface
Impedance: 600ohm
Insertion loss:-3±0.75dB
Frequency characteristic:300 ~ 3400Hz (-0.6 ~ +3dB)
Weighted noise:≤ 63.7dBmop
Crosstalk loss:≥ 65dB
V.35 interface
Interface type:V.35 synchronous
Velocity:N*64Kb/s (N =1~15)
Clock mode: DCE
V.24(RS232) interface
Interface type:V.24 asynchronous
Velocity:0 ~ 19.2Kbps
2/4 line audio interface (2/4 line E&M interface)
Impedance:200ohm + 680ohm||0.1μF
4-line AD gain:14dB (adjustable)
4-line DA gain:-2 dB (adjustable)
4-line AD frequency response:-0.2 - +0.2dB
4-line DA frequency response:-0.2 - +0.2dB
2-line AD frequency response:-0.2 - +0.2dB
4-line DA frequency response:-0.2 - +0.2dB (adjustable)
Return loss:40dB
Degree of balance:70dB
Common-mode rejection ratio:70dB
Power-supply rejection ratio:30dB
Idle-channel noise:≥65dB
Loop resistance:600ohm
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