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CiTRANS R820 Edge Router Hardware Description
Table 5-5 Definitions of Interfaces or Terminals on the Panel of the SCUS1/SCUS2/SCUS3
(Continued)
Diagram
Interface Pin
Note 1
Name
Description
SIG/CON
1 FTP
Positive terminal of the Ethernet data
output
2 FTN
Negative terminal of the Ethernet
data output
3 FRP
Positive terminal of the Ethernet data
input
4 E
Serial port signal ground
5 LDR
Serial port data input
6 FRN
Negative terminal of the Ethernet
data input
8 LDT
Serial port data output
COM/MC
1 FTP
Positive terminal of the Ethernet data
output
2 FTN
Negative terminal of the Ethernet
data output
3 FRP
Positive terminal of the Ethernet data
input
4 MON
Equipment room monitoring signal
input
5 E
Equipment room monitoring signal
ground
6 FRN
Negative terminal of the Ethernet
data input
7 E
Equipment room control signal
ground
8 CTR
Equipment room control signal output
AIF
1 SPK-
Negative terminal of the audio alarm
signal output
2 SPK+
Positive terminal of the audio alarm
signal output
3 COM
CALL, NUA, and UA common loops
4 CALL
Call signal
5 NUA Non-critical alarm
6 UA Critical alarm
5-12 Version: A