Raisecom Technology Co., Ltd
5
3 Parameters
3.1 Parameters of E1 interface
Bit Rate:
2048Kbps±50ppm
Line
Coding:
HDB3
Input Impedance:
75
Ω
（
unbalanced BNC connector
）
, 120
Ω
（
balanced RJ-45
connector
）
Electric Characteristics: Compliant with ITU-T G.703 recommendation
Frame format: Compliant with ITU-T G.704 recommendation
（
this device supports
timeslot allocation
）
.
Jitter:
Compliant with ITU-T G.823 recommendation.
Functionalities: Complete link alarm indicator, Fault Pass Through and intelligent
auto-reset functions.
Note: if there is some equipment (PCM device, or DXC device for example) that
requires modifying the timeslot 0 of E1, the remote alarm inspecting function of the
converter is invalid then.
3.2 E1 cable type:
SYV 75-2-2 coaxial cable is recommended for unbalanced signal and the maximum
transmission is more than 200m.
Twisted-pair of 0.6mm (22AWG) is recommended for balanced signal.
3.3 Parameters of Ethernet optical interface
Maximum size of Ethernet frame is 1593 bytes
Support flow control of IEEE 802.3x
