3. Installing the ADSL Modem

3.2Rear Panel (Cont’)
7.HUB-PC Switch

The HUB-PC switch controls the crossover function. Modem-to-PC connection must contain crossovers. When connecting the modem to a PC, leaving the switch on the default position PC allows you to implement crossover cabling without using a crossover cable. When connecting the modem to an Ethernet hub’s RJ-45 downlink port, use a pen or screwdriver to slide the switch to HUB and implement straight-through cabling. If you run out of the hub’s downlink ports and connect the modem to the uplink port, you must slide the switch to the position of PC.

Example 1. Modem to PC

Example 2. Modem to Hub (Downlink)

Example 3. Modem to Hub (Uplink)

 

UPLINK

1

2

3

4

5

6

7

8

UPLINK

1

2

3

4

5

6

7

8

 

 

 

 

 

 

 

 

 

 

HUB

PC

 

When using a PC with the modem, adjust the HUB-PC switch to the position of PC.

HUB

PC

HUB

PC

 

 

When connecting the modem to an

When connecting the modem to an

Ethernet hub’s downlink port, adjust the

Ethernet hub’s uplink port, adjust the HUB-

HUB-PC switch to the position of HUB.

PC switch to the position of PC.

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