IPECS Release 5
Hardware Description & Installation
Issue 5.0
22
2.1.12 POE8 (Power Over Ethernet switching hub)
The Power over Ethernet Switching Module (POE8) has eight (8) LAN ports and an UPLINK LAN
port, all of which employ Ethernet switching. All ports support Auto-sense 10/100Mbps, half/full
duplex mode and auto MDI/MDIX function. Therefore a straight or cross RJ-45 cable can be used
for connection between two Ethernet ports. The POE8 is a standard nine (9) port Ethernet switch,
which switches packets between two specified ports. Unlike a repeater that repeats each packet to
all ports, using the POE8 minimizes traffic over each port as well as the overall LAN environment.
The eight (8) LAN ports of the POE8 are equipped with circuitry to provide power (48 VDC) to the
LIP Phone or LIP-7000 series console through the LAN cable. The POE8 supplies power
automatically to terminals in accordance with the IEEE 802.3af PD (Powered Device) specification.
LEDs are provided on the front panel to display the power feed status of each port. Note the
UPLINK LAN port is not equipped with the power feed circuitry.
As shown in Figure 2.1.12-1, the front panel of the POE8 has:
•
Power jack for the AC/DC adapter; see section 2.1.15
AD/DC adapter –G-,
•
Power status LED,
•
Eight (8)-port “PORT PWR STATUS” LEDs,
•
One (1) RJ-45 Female “UPLINK” LAN connector with Speed
and Link/Activity LEDs,
•
Eight (8) RJ-45 Female LAN connectors with Speed and
Link/Activity LEDs, one per port.
On the rear panel, the POE8 has:
•
DB-9 RS-232 Serial port connector,
•
Ground
Lug,
•
Fifty (50)-pin back plane connector.
Figure 2.1.12-1 POE8 Front & Rear Panels
