
AT-FS705PD Fast Ethernet Switch Installation Guide
25
Table 5 lists the RJ-45 connector pins and their signals used in Port 5 when
this port is connected to a PSE device using a straight cable.
Table 5 Port 5 RJ-45 Pin Signals (using straight cable)
PSE PWR
Configuration
Alternative A
(MDI)
PSE side
Alternative A
(MDI-X)
PSE side
Alternative A
(MDI)
PSE side
Alternative A
(MDI-X)
PSE side
Pin Number Port 5 Signals (*)
1
RX+ and
Vport-1
TX+ and
Vport-1
RX+ TX+
2RX- and
Vport-1
TX- and
Vport-1
RX- TX-
3
TX+ and
Vport-2
RX+ and
Vport-2
TX+ RX+
4 - - Vport+ Vport+
5 - - Vport+ Vport+
6TX- and
Vport-2
RX- and
Vport-2
TX- RX-
7 - - Vport- Vport-
8-- Vport- Vport-
(*) Vport-1 can be either Vport + or Vport-, depending on the PSE device.
Vport-2 can be either Vport+ or Vport-, depending on the PSE device.
If Vport-1 = Vport +, then Vport-2 = Vport-, and if Vport-1 = Vport -, then Vport-2 = Vport+.
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