3com 8807 Manual Do Utilizador

Step 1: Plug the RJ-45 connector of the AUX cable into the AUX port of the 
switch.

Step 2: Plug the DB-25 (male) or DB-9 (male) connector at the other end into the 
serial port of the analog modem.

Being RJ-45 connector, the 10Base-T/100Base-TX port of the Switch 8800 Family 
supports MDI/MDIX auto-sensing and will be connected using the category-5 
shielded cable. The following figure illustrates an RJ-45 connector.

Figure 50   RJ45 connector

Step 1: Plug one end of the network cable into the desired Ethernet RJ-45 
connector on the switch.

Step 2: Plug the other end of the cable into the RJ-45 port of the peer device.

n 

n 

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When selecting a fiber network facility, make sure that the type of the 
connector and the fiber match the adopted optical port.

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Before connecting the fiber, make sure that the receive-end optical power does 
not exceed the upper threshold of the receiving optical power. Excessive 
receiving optical power is very likely to burn the optical module.

Fiber connectors are indispensable passive components in an optical fiber 
communication system. Their application allows the removable connection 
between optical channels, which makes the optical system debugging and 
maintenance more convenient and the transit dispatching of the system more 
flexible. Among various fiber connectors, only LC connector will be introduced 
here.

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LC fiber connector 

8 

CTS 

←

5 

8

Table 72   AUX cable pinouts

PIN  #8

PIN  #1