Cisco模块化接入路由器线缆说明书（节选翻译）

This document provides cable specifications for Cisco 1800 series, Cisco 2600 series, Cisco 2800 series, Cisco 3600 series, Cisco 3700 series, and Cisco 3800 series routers.

这份文件提供了如下路由器系列的电缆规格：思科 1800 系列, 思科 2600 系列, 思科 2800 系列, 思科 3600 系列, 思科 3700 系列, 和思科 3800 系列路由器。

 

Fast Ethernet Connector Pinouts

快速以太网连接器针脚定义

 

This section illustrates the Fast Ethernet 100BASE-TX (RJ-45) connector and lists its pinouts and signal descriptions.

这一个章节阐述了快速以太网 100BASE-TX(RJ-45) 连接器并且列出了它的管脚和信号定义。

Figure 5 shows the 100BASE-TX RJ-45 connector, and Table 6 lists its pinouts. The 1-port Fast Ethernet network module RJ-45 port actively terminates wire pair 4 and 5 and wire pair 7 and 8. Common-mode termination reduces electromagnetic interference (EMI) and susceptibility to common-mode sources.

图五 所示的为 100BASE-TX RJ-45 连接器，表6列出了它的管脚。1个快速以太网模块RJ-45只要将4、5线对和7、8线对连接即可激活。通常的连接方式可以减弱电磁干扰。

Figure 5 100BaseTX RJ-45 Connector

 

 

Table 6 RJ-45 Connector Pinout

Pin

Signal

1	TX+
2	TX-
3	RX+
6	RX-

 

 

 

CE1/PRI Interface

CE1/PRI 接口

This section contains the following topics:

•CE1/PRI Cables

•CE1/PRI Pinouts

这个章节包含下面两个主题:

•CE1/PRI 线缆

•CE1/PRI 管脚定义

CE1/PRI Cables

CE1/PRI 线缆

Cisco Systems makes four cables for the CE1/PRI modules. All four have DB-15 connectors on the CE1/PRI end and either BNC, DB-15, twinaxial, or RJ-45 connectors on the network end. Figure 7 through Figure 10 show the CE1/PRI interface cables.

Figure 7 E1 Interface Cable for 75-Ohm, Unbalanced Connections with BNC Connectors

 

Figure 8 E1 Interface Cable for 120-Ohm, Balanced Connections with DB-15 Connectors

 

 

Figure 9 E1 Interface Cable for 120-Ohm, Balanced Connections with Twinaxial Connectors

 

 

Figure 10 E1 Interface Cable for 120-Ohm, Balanced Connections with an RJ-45 Connector

 

 

CE1/PRI Pinouts

Table 15 lists pinouts for the CE1/PRI interface cables.

 

Table 15 E1 Interface Cable Pinouts 

CE1/PRI End

Network End

DB-15

BNC

DB-15

Twinax

RJ-45

Pin

Signal

Signal

Pin

Signal

Pin

Signal

Pin

Signal

9	TX Tip	TX Tip	1	TX Tip	TX-1	TX Tip	1	TX Tip
2	TX Ring	TX Shield	9	TX Ring	TX-2	TX Ring	2	TX Ring
10	TX Shield	—	2	TX Shield	Shield	TX Shield	3	TX Shield
8	RX Tip	RX Tip	3	RX Tip	RX-1	RX Tip	4	RX Tip
15	RX Ring	RX Shield	11	RX Ring	RX-2	RX Ring	5	RX Ring
7	RX Shield	—	4	RX Shield	Shield	RX Shield	6	RX Shield

 

 

T1/E1 Trunk and Digital Voice Port Pinouts (RJ-48)

Figure 11 shows the RJ-48 connector wiring for the T1/E1 trunk cable and the digital voice port cable; Table 17 lists the pinouts.

Figure 11 RJ-48-to-RJ-48 T1/E1 Cable Wiring

 

 

 

Table 17 Pinouts for T1/E1 Trunk and Digital Voice Port (RJ-48)

Pin1

Signal

1	RX + (input)
2	RX - (input)
3	—
4	TX + (output)
5	TX - (output)
6	—
7	—
8	—

1 Any pin not referenced on a connector is not connected.

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