Connecting Serial Cables; Connecting The Fan Tray Alarm Port - Cisco ASR 903 Installation Manual

Installing the Cisco ASR 903 Router

Connecting Serial Cables

The tables below detail the supported cables with the Cisco ASR 903 Router.
Note The Cisco ASR 903 Router currently only supports the EIA/TIA-232 connector.
Table 23: Interface Cables for 12-in-1 Connector
Cable Type
V.35 DTE
V.35 DCE
EIA/TIA-232 DTE
EIA/TIA-232 DCE
EIA/TIA-449 DTE
EIA/TIA-449 DCE
X.21 DTE
X.21 DCE
EIA/TIA-530 DTE
EIA/TIA-530 DTE
Table 24: Interface Cables for 68-Pin Connector
Cable Type
4-port EIA-232 DTE
4-port EIA-232 DCE
4-port EIA-232 DTE
4-port EIA-232 DTE
4-port EIA-232 DTE

Connecting the Fan Tray Alarm Port

The fan tray includes an alarm port that maps to 4 dry contact alarm inputs.
The pins on the alarm port are passive signals and can be configured as Normally Open (an alarm generated
when current is interrupted) or Normally Closed (an alarm is generated when a circuit is established) alarms.
You can configure each alarm input as critical, major, or minor. An alarm triggers alarm LEDs and alarm
Product Number Length Male/Female
CAB-SS-V35MT 10 ft. Male
CAB-SS-V35FC 10 ft. Female
CAB-SS-232MT 10 ft. Male
CAB-SS-232FC 10 ft. Female
CAB-SS-449MT 10 ft. Male
CAB-SS-449FC 10 ft. Female
CAB-SS-X21MT 10 ft. Male
CAB-SS-X21FC 10 ft. Female
CAB-SS-530MT 10 ft. Male
CAB-SS-530FC 10 ft. Female
Product Number
CAB-HD4-232MT
CAB-HD4-232FC
CAB-QUAD-ASYNC-F
CAB-QUAD-ASYNC-M
CAB-9AS-M
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
Connector
M34
M34
DB-25
DB-25
DB-37
DB-37
DB-15
DB-15
DB-25
DB-25
Length Male/Female Connector
10 ft. Male DB-25
10 ft. Female DB-25
10 ft. Female RJ-45
10 ft. Male RJ-45
10 ft. Male DB-9
Connecting Serial Cables
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