Cisco ASR 903 Operating instructions

Troubleshooting
This chapter provides information for troubleshooting problems on the Cisco ASR 903 Router.
•BITS Port Pinout, page 1
•GPS Port Pinout, page 2
•Time of Day Port Pinout, page 3
•Alarm Port Pinout, page 4
•Console/Aux RJ45 RS232 Serial Port Pinout, page 5
•Serial Cable Pinouts, page 11
•E and M Interface Module Pinouts, page 13
•Management Ethernet Port Pinout, page 14
•USB Console Port Pinout, page 14
•USB Flash/MEM Port Pinout, page 15
•Fiber-Optic Specifications, page 16
•LED Summary, page 16
BITS Port Pinout
The table below summarizes the BITS port pinout of the Front Panel “Building Integrated Timing Supply”
RJ48 port.
Table 1: BITS Port Pinout
DescriptionDirectionSignal NamePin
Receive RingInputRX Ring1
Receive TipInputRX Tip2
Not used3
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DescriptionDirectionSignal NamePin
TX RingOutputTX Ring4
TX TipOutputTX Tip5
Not used6
Not used7
Not used8
GPS Port Pinout
The platform is capable of receiving or sourcing GPS signals of 1 PPS & 10 MHz. These interfaces are
provided by two mini-coax 50-Ohm, 1.0/2.3 DIN series connector on the front panel. Similarly there are two
mini-coax 50-Ohm connectors provided in the front panel to output this 1PPS and 10MHz.
The table below summarizes the GPS port pinouts.
Table 2: GPS Port Pinout
1PPS (input and output)10 Mhz (input and output)
Input—Rectangular pulse
Output—Rectangular pulse
Input—Sine wave
Output—Square wave
Waveform
Input—> 2.4 volts TTL
compatible
Output—> 2.4 volts TTL
compatible
Input—> 1.7 volt p-p(+8 to +10
dBm)
Output—> 2.4 volts TTL
compatible
Amplitude
50 ohms50 ohmsImpedance
26 microseconds50% duty cyclePulse Width
40 nanoseconds
Input—AC coupled
Output—5 nanoseconds
Rise Time
Table 3: GPS Port Pinout for ASR 900 RSP3
1PPS (input and output)10 Mhz (input and output)
Input—Rectangular pulse
Output—Rectangular pulse
Input—Sine wave
Output—Sine and Square wave
Waveform
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GPS Port Pinout

1PPS (input and output)10 Mhz (input and output)
Input—> 2.4 volts TTL
compatible
Output—> 2.4 volts TTL
compatible
Input—> 1.7 volt p-p(+8 to +10
dBm)
Output—> 2.4 volts TTL
compatible
Amplitude
50 ohms50 ohmsImpedance
26 microseconds50% duty cyclePulse Width
40 nanoseconds
Input—AC coupled
Output—5 nanoseconds
Rise Time
Time of Day Port Pinout
The table below summarizes the ToD port pinout for ASR900-RSP1-55.
Table 4: RJ45 ToD Port Pinout
DescriptionDirectionSignal NamePin
1PPS RS422 signalOutput or Input1PPS_P1
1PPS RS422 signalOutput or Input1PPS_N2
Do NOT connectOutputRESERVED3
GND4
Time of Day characterGND5
Do NOT connectInputRESERVED6
Time of Day characterOutput or InputTOD_P7
Time of Day characterOutput or InputTOD_N8
The table below summarizes the TOD pinout for A900-RSP2A and A900-RSP3-3C-400 modules.
This port requires the use of SHIELDED cable for GR-1089-core “Intra-Bldg lightning surge”protection.
RS422 interface is per industry standard EIA-422 /RS422 specification.
Note
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Time of Day Port Pinout

Table 5: RJ48 IPPS/ToD Port Pinout
DescriptionDirectionSignal NamePin
V.11 Cable CorporationOutput or InputRESERVED1
Output or InputRESERVED2
1PPS RS422 signalOutput1PPS_N3
GND4
5
1PPS RS422 signalInput1PPS_P6
Time of Day R422 output
or input signal
Output or InputTOD_N7
Time of Day R422 output
or input signal
Output or InputTOD_P8
Alarm Port Pinout
The table below summarizes the external alarm input pinout.
Table 6: External Alarm Input Pinout
DescriptionSignal NamePin
Alarm input 0ALARM0_IN1
Alarm input 1ALARM1_IN2
No connect3
Alarm input 2ALARM2_IN4
Alarm input 3ALARM3_IN5
No connect6
No connect7
Alarm commonCOMMON8
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Alarm Port Pinout

Console/Aux RJ45 RS232 Serial Port Pinout
The table below summarizes the console/aux RJ45 RS232 serial port pinout.
Table 7: Console/Aux RJ45 RS232 serial port
DescriptionDirectionSignal NamePin
Request to sendOutputRTS1
Data Terminal Ready
(always On).
OutputDTR2
Transmit dataOutputTXD3
Ring IndicatorRI4
GND5
Receive dataInputRXD6
Data set ready/Data
Carrier detect
InputDSR/DCD7
Clear to sendInputCTS8
16 T1/E1 Interface Module Pinout
The table below summarizes the pinouts of the cable (Tyco part number 2163442-1, Cisco part number
72-5184-01) used to connect the T1/E1 interface module to the rear of the patch panel.
Table 8: 16 T1/E1 Interface Pinouts
Jack PinTelco RXSignal
Name
Board
Pins
Jack PinTelco TXSignal
Name
Board
PIns
Line
439RX_RING_P192139TX_RING_P188Line 0
514RX_TIP_P142214TX_TIP_P138
438RX_RING_P291138TX_RING_P287Line 1
513RX_TIP_P241213TX_TIP_P237
435RX_RING_P380135TX_RING_P376Line 2
510RX_TIP_P330210TX_TIP_P326
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Console/Aux RJ45 RS232 Serial Port Pinout

Jack PinTelco RXSignal
Name
Board
Pins
Jack PinTelco TXSignal
Name
Board
PIns
Line
434RX_RING_P479134TX_RING_P475Line 3
59RX_TIP_P42929TX_TIP_P425
441RX_RING_P594141TX_RING_P5100Line 4
516RX_TIP_P544216TX_TIP_P550
440RX_RING_P693140TX_RING_P699Line 5
515RX_TIP_P643215TX_TIP_P649
437RX_RING_P782137TX_RING_P786Line 6
512RX_TIP_P732212TX_TIP_P736
436RX_RING_P881136TX_RING_P885Line 7
511RX_TIP_P831211TX_TIP_P835
431RX_RING_P968131TX_RING_P964Line 8
56RX_TIP_P91826TX_TIP_P914
430RX_RING_P1067130TX_RING_P1063Line 9
55RX_TIP_P101725TX_TIP_P1013
427RX_RING_P1156127TX_RING_P1152Line 10
52RX_TIP_P11622TX_TIP_P112
426RX_RING_P1255126TX_RING_P1251Line 11
51RX_TIP_P12521TX_TIP_P121
433RX_RING_P1370133TX_RING_P1374Line 12
58RX_TIP_P132028TX_TIP_P1324
432RX_RING_P1469132TX_RING_P1473Line 13
57RX_TIP_P141927TX_TIP_P1423
429RX_RING_P1558129TX_RING_P1562Line 14
54RX_TIP_P15824TX_TIP_P1512
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16 T1/E1 Interface Module Pinout

Jack PinTelco RXSignal
Name
Board
Pins
Jack PinTelco TXSignal
Name
Board
PIns
Line
428RX_RING_P1657128TX_RING_P1661Line 15
53RX_TIP_P16723TX_TIP_P1611
The figure below shows the wiring schematic of the cable used to connect the T1/E1 interface module to the
rear of the patch panel.
Figure 1: Wiring Schematic of Cable between 16 T1/E1 Interface and Patch Panel
32 T1/E1 Interface Module Pinout
The table below summarizes the pinouts of the cable used to connect the 32 T1/E1 interface module to the
rear of the patch panel.
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Troubleshooting
32 T1/E1 Interface Module Pinout

Table 9: 32 T1/E1 Pinout
Jack PinTelco RXSignal
Name
Board
Pins
Jack PinTelco TXSignal
Name
Board
PIns
LineBoard
Connector
439RX_RING_P066139TX_RING_P048Line 0PORTS
0-15
514RX_TIP_P032214TX_TIP_P014
438RX_RING_P165138TX_RING_P147Line 1
513RX_TIP_P131213TX_TIP_P113PORTS
0-15
435RX_RING_P262135TX_RING_P244Line 2PORTS
0-15
510RX_TIP_P228210TX_TIP_P210
434RX_RING_P361134TX_RING_P343Line 3PORTS
0-15
59RX_TIP_P32729TX_TIP_P39
441RX_RING_P468141TX_RING_P450Line 4PORTS
0-15
516RX_TIP_P434216TX_TIP_P416
440RX_RING_P567140TX_RING_P549Line 5PORTS
0-15
515RX_TIP_P533215TX_TIP_P515
437RX_RING_P664137TX_RING_P646Line 6PORTS
0-15
512RX_TIP_P630212TX_TIP_P612
436RX_RING_P763136TX_RING_P745Line 7PORTS
0-15
511RX_TIP_P729211TX_TIP_P711
431RX_RING_P858131TX_RING_P840Line 8PORTS
0-15
56RX_TIP_P82426TX_TIP_P86
430RX_RING_P957130TX_RING_P939Line 9PORTS
0-15
55RX_TIP_P92325TX_TIP_P95
427RX_RING_P1054127TX_RING_P1036Line 10PORTS
0-15
52RX_TIP_P102022TX_TIP_P102
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32 T1/E1 Interface Module Pinout

Jack PinTelco RXSignal
Name
Board
Pins
Jack PinTelco TXSignal
Name
Board
PIns
LineBoard
Connector
426RX_RING_P1153126TX_RING_P1135Line 11PORTS
0-15
51RX_TIP_P111921TX_TIP_P111
433RX_RING_P1260133TX_RING_P1242Line 12PORTS
0-15
58RX_TIP_P122628TX_TIP_P128
432RX_RING_P1359132TX_RING_P1341Line 13PORTS
0-15
57RX_TIP_P132527TX_TIP_P137
429RX_RING_P1456129TX_RING_P1438Line 14PORTS
0-15
54RX_TIP_P142224TX_TIP_P144
428RX_RING_P1555128TX_RING_P1537Line 15PORTS
0-15
53RX_TIP_P152123TX_TIP_P153
439RX_RING_P1666139TX_RING_P1648Line 16PORTS
16-31
514RX_TIP_P1632214TX_TIP_P1614
438RX_RING_P1765138TX_RING_P1747Line 17
513RX_TIP_P1731213TX_TIP_P1713PORTS
16-31
435RX_RING_P1862135TX_RING_P1844Line 18PORTS
16-31
510RX_TIP_P1828210TX_TIP_P1810
434RX_RING_P1961134TX_RING_P1943Line 19PORTS
16-31
59RX_TIP_P192729TX_TIP_P199
441RX_RING_P2068141TX_RING_P2050Line 20PORTS
16-31
516RX_TIP_P2034216TX_TIP_P2016
440RX_RING_P2167140TX_RING_P2149Line 21PORTS
16-31
515RX_TIP_P2133215TX_TIP_P2115
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32 T1/E1 Interface Module Pinout

Jack PinTelco RXSignal
Name
Board
Pins
Jack PinTelco TXSignal
Name
Board
PIns
LineBoard
Connector
437RX_RING_P2264137TX_RING_P2246Line 22PORTS
16-31
512RX_TIP_P2230212TX_TIP_P2212
436RX_RING_P2363136TX_RING_P2345Line 23PORTS
16-31
511RX_TIP_P2329211TX_TIP_P2311
431RX_RING_P2458131TX_RING_P2440Line 24PORTS
16-31
56RX_TIP_P242426TX_TIP_P246
430RX_RING_P2557130TX_RING_P2539Line 25PORTS
16-31
55RX_TIP_P252325TX_TIP_P255
427RX_RING_P2654127TX_RING_P2636Line 26PORTS
16-31
52RX_TIP_P262022TX_TIP_P262
426RX_RING_P2753126TX_RING_P2735Line 27PORTS
16-31
51RX_TIP_P271921TX_TIP_P271
433RX_RING_P2860133TX_RING_P2842Line 28PORTS
16-31
58RX_TIP_P282628TX_TIP_P288
432RX_RING_P2959132TX_RING_P2941Line 29PORTS
16-31
57RX_TIP_P292527TX_TIP_P297
429RX_RING_P3056129TX_RING_P3038Line 30PORTS
16-31
54RX_TIP_P302224TX_TIP_P304
428RX_RING_P3155128TX_RING_P3137Line 31PORTS
16-31
53RX_TIP_P312123TX_TIP_P313
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32 T1/E1 Interface Module Pinout