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Relay
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2
7. Ethernet Ports
Ethernet Transport/User Ports (Eth 1 and 3)
The four Ethernet transport ports (Enet-1 to Enet-4) provide 10/100BaseT interfaces with standard RJ-45
pinouts. When the IDU is properly configured, the IDU provides transport of Ethernet frames ingressed at
these ports over the link to the far side radio. An internal Ethernet switch also provides layer 2 switching
functions between these two ports and the far side of the link. The Ethernet PHYs provide MDI/MDI-X
cross-connect with auto-detect, so both straight-thru and cross cables are accommodated to any other
10/100 Base-T interface.
Ethernet Management/NMS Ports (Eth Mgmt 0 and 2)
The two Ethernet management ports (Mgmt-1 and Mgmt-2) provide 10/100BaseT interfaces to the IDU
with standard RJ-45 pinouts. These ports can be configured either as standard Ethernet transport ports or
allow management access to the IDU's configuration and status interface. An internal Ethernet switch
also provides layer 2 switching functions between these two ports and the far side of the link. As with the
standard Ethernet transport ports, these ports come with auto-detect for both types of Ethernet cables. A
VLAN can be set up so that the management ports can be logically separated from the transport ports for
security reasons.
Ethernet Port Front Panel LEDS
Two front panel connector LEDs are included for each of the four Ethernet ports. Status of each is
indicated in Table 4-4.
LED
Left
Right
8. T1 / E1 Ports
The T1/E1 ports are 8-pin modular jacks with standard RJ-48 pinouts as shown in Figure 4-2 and Table
4-1 below. The transport mode is software configurable to support one to four T1 or E1 channels. Lines
are matched to 100 ohm in T1 mode and 120 ohm in E1 mode.
Note1: Relay COM pin connected to NC pin,
Note2: Relay COM pin connected to NO pin
Closed
IDU demod is locked
IDU-ODU comm link is up
Table 1-3: Default Relay States ().
Indication
LINK/ACT
LED on indicates link is active. Blinking indicates link
activity (Tx or Rx).
SPEED
LED on indicates 100BaseT. LED off (accompanied by
LINK LED on indicates 10BaseT.
Table 4-4: Ethernet Port LEDs
1
IDU demod is unlocked
IDU-ODU comm link is down
Description
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2
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