Interface Description - Raisecom RC831-120-M User Manual

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3.4 Interface description

A PC-AGENT interface for network management is placed on the front panel of the device. The
interfaces are described in the table below:
Serial
Number
28
29
E1 interfaces are placed on the rear panel of the device. Please see the table below for the description
of the unbalanced E1 interfaces for RC831-120.
E1 interface 1~4
RC831-120-BL and RC831-120 use different E1 interfaces. The balanced E1 interfaces for
RC831-120-BL are described in the table below:
E1 interface 1~4
Reserved
Title
LNK-DWN
LNK-UP
Interface
BNC
Description:
Interface
RJ-45
OFF: no LOS alarm at both local and remote E1
interface
Interface Description
RJ-45 Cascade interface.
Connect to the LNK-UP interface of the
device on the lower level of the cascade.
Comply with RS232 electrical level
standard. The port will be working at the
rate of 19200bps.
RJ-45 Local network management interface or
cascade interface.
Connect to the serial port of the PC for
network management or connect to the
LNK-DWN interface of the device on the
higher level of the cascade. Comply with
RS232 electrical level standard. The port
will be working at the rate of 19200bps.
Description
75Ω unbalanced E1 interface 1~4
Description
120Ω balanced E1 interface 1~4
User Manual
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