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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
E1 Cable Configuration and Pin Assignment

E1 Cable Configuration and Pin Assignment

Important Note

Table 29-3 describes the E1 cable configuration method.

Table 29-3  E1 cable configuration

Card Name

Cable Configuration

Cable Ordering

Pin Assignment

1E1/T1-M

Configure the E1 cable according to the connector type of a network device:
  • If the BNC connector is used, the 75-ohm DB9-to-BNC cable is used.
  • If the RJ45 connector is used, the 120-ohm DB9-to-RJ45 cable is used.
  • If the RJ45 connector is used, the 100-ohm DB9-to-RJ45 cable is used.

Part number of the 75-ohm DB9-to-BNC cable: 04120275

Part number of the 120-ohm DB9-to-RJ45 cable: 04120276

Part number of the 100-ohm DB9-to-RJ45 cable: 04120277

Pin assignment of the 75-ohm DB9-to-BNC cable

Pin assignment of the 120-ohm DB9-to-RJ45 cable

Pin assignment of the 100-ohm DB9-to-RJ45 cable

2E1/T1-M

2E1/T1-M-W

1E1/T1-F

2E1/T1-F

4E1/T1-M

Configure the E1 cable according to the connector type of a network device:
  • If the BNC connector is used, the 75-ohm RJ45-to-BNC cable is used.
  • If the RJ45 connector is used, the 120-ohm RJ45-to-RJ45 cable is used.
Part number of the 75-ohm RJ45-to-BNC cable:
  • 04120387 (cable length of 3 m)
  • 04120387-001 (cable length of 50 m)
  • 04120387-002 (cable length of 100 m)
Part number of the 120-ohm RJ45-to-RJ45 cable:
  • 04040497 (cable length of 3 m)
  • 04040497-003 (cable length of 50 m)
  • 04040497-004 (cable length of 100 m)

Pin assignment of the 75-ohm RJ45-to-BNC cable

Pin assignment of the 120-ohm RJ45-to-RJ45 cable

8E1/T1-M

4E1/T1-F

8E1/T1-F

Pin assignment of the 75-ohm DB9-to-BNC cable

Figure 29-1 shows the structure of a 75-ohm DB9-to-BNC cable.
Figure 29-1  Structure of a 75-ohm DB9-to-BNC cable

Table 29-4 shows the pin assignments of a 75-ohm DB9-to-BNC cable.
Table 29-4  Pin assignments of a 75-ohm DB9-to-BNC cable

DB9

BNC

Pin

Signal

Label

Pin

Signal

1

Rx +

R

Core wire

Rx

2

Rx -

Insulated wire

GND

6

Tx +

T

Core wire

Tx

7

Tx -

Insulated wire

GND

NOTE:
  • Tx stands for transmission, and Rx stands for receiving.
  • The R and T tags on BNC coaxial cables indicate the signal directions on a router. The R and T BNC coaxial cables must be connected to the Tx and Rx interfaces on the remote device.

Pin assignment of the 120-ohm DB9-to-RJ45 cable

Figure 29-2 shows the structure of a 120-ohm DB9-to-RJ45 cable.
Figure 29-2  Structure of a 120-ohm DB9-to-RJ45 cable

Table 29-5 shows the pin assignments of a 120-ohm DB9-to-RJ45 cable.
Table 29-5  Pin assignments of a 120-ohm DB9-to-RJ45 cable

DB9

RJ45

Pin

Signal

Pin

Signal

1

Rx +

4

Rx +

2

Rx -

5

Rx -

6

Tx +

1

Tx +

7

Tx -

2

Tx -

Pin assignment of the 100-ohm DB9-to-RJ45 cable

Figure 29-3 shows the structure of a 100-ohm DB9-to-RJ45 cable.
Figure 29-3  Structure of a 100-ohm DB9-to-RJ45 cable

Table 29-6 shows the pin assignments of a 100-ohm DB9-to-RJ45 cable.
Table 29-6  Pin assignments of a 100-ohm DB9-to-RJ45 cable

DB9

RJ45

Pin

Signal

Pin

Signal

1

Rx +

4

Rx +

2

Rx -

5

Rx -

6

Tx +

1

Tx +

7

Tx -

2

Tx -

Pin assignment of the 75-ohm RJ45-to-BNC cable

Figure 29-4 shows the structure of a 75-ohm RJ45-to-BNC cable.
Figure 29-4  Structure of a 75-ohm RJ45-to-BNC cable

Table 29-7 shows the pin assignments of a 75-ohm RJ45-to-BNC cable.
Table 29-7  Pin assignments of a 75-ohm RJ45-to-BNC cable

RJ45

BNC

Pin

Signal

Label

Pin

Signal

1

Rx -

R

Core wire

Rx

2

Rx +

Insulated wire

GND

4

Tx -

T

Core wire

Tx

5

Tx +

Insulated wire

GND

NOTE:
  • Tx stands for transmission, and Rx stands for receiving.
  • The R and T tags on BNC coaxial cables indicate the signal directions on a router. The R and T BNC coaxial cables must be connected to the Tx and Rx interfaces on the remote device.

Pin assignment of the 120-ohm RJ45-to-RJ45 cable

Figure 29-5 shows the structure of a 120-ohm RJ45-to-RJ45 cable.
Figure 29-5  Structure of a 120-ohm RJ45-to-RJ45 cable

Table 29-8 shows the pin assignments of a 120-ohm RJ45-to-RJ45 cable.
Table 29-8  Pin assignments of a 120-ohm RJ45-to-RJ45 cable

X1

X2

Pin

Signal

Pin

Signal

1

Rx -

4

Rx -

2

Rx +

5

Rx +

4

Tx -

1

Tx -

5

Tx +

2

Tx +

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Updated: 2019-05-10

Document ID: EDOC1000079719

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