Cisco ASR 903

CHAPTER 5
Troubleshooting
This chapter provides information for troubleshooting problems on the Cisco ASR 903 Router.
• BITS Port Pinout, on page 161
• GPS Port Pinout, on page 162
• Time of Day Port Pinout, on page 163
• Alarm Port Pinout, on page 164
• Console/Aux RJ45 RS232 Serial Port Pinout, on page 164
• T1/E1 Port Pinout, on page 171
• Serial Cable Pinouts, on page 172
• E and M Interface Module Pinouts, on page 174
• Management Ethernet Port Pinout, on page 174
• USB Console Port Pinout, on page 175
• USB Flash/MEM Port Pinout, on page 176
• Fiber-Optic Specifications, on page 176
• LED Summary, on page 177
BITS Port Pinout
The table below summarizes the BITS port pinout of the Front Panel “Building Integrated Timing Supply”
RJ48 port.
Table 25: BITS Port Pinout
DescriptionDirectionSignal
Name
Pin
Receive
Ring
InputRX Ring1
Receive TipInputRX Tip2
Not used——3
TX RingOutputTX Ring4
TX TipOutputTX Tip5
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
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