Marking Connector Description Optical
Indicator
(1)
Channels FEC
Indicators, Buttons, and
Switches.
- Status
Optical indicator, yellow
Yes - -
- Fan unit fault
Optical indicator, yellow
Yes - -
(1) For more information about optical indicators, refer to Indicators, Buttons, and Switches
(2) The 19-inch Baseband units have a built-in 10 ms hold-up function.
(3) The unit supports power redundancy. Connect power sources to both power ports. If the power to one port goes
down, a failover will occur automatically to the other power source.
(4) The unit supports 3-wire (DC-I) power feed. It can also support 2-wire (DC-C) power feed by making a jumper
connection in the power cable. Refer to Install 19-Inch Baseband for more information about the power cable pin out,
and Power Cables 2- and 3-Wire.
(5)
Auto-negotiation not supported for 25G electrical interface (25GBASE-CR)
(6)
Supports synchronization over the transport network.
(7)
IEEE802.3 clause 108
(8)
Only supported in 25G link speed
(9)
IEEE802.3 clause 74
(10)
SFP+ is needed for rates higher than 2.5 Gbps.
(11)
SFP28 is needed for rates higher than 10 Gbps.
(12)
SFP+ is needed for CPRI rates higher than 2.5 Gbps.
(13)
SFP28 is needed for CPRI rates higher than 10 Gbps
(14) Depending on the Software Package
(15)
Only available when unit is in network loader state
(16)
RS-232 interface. Accessed with the LMT splitter cable.
(17) For more information about the LMT interfaces, see Connect Client.
(18)
100 Mbps electrical Ethernet interface.
(19)
Compliant with 1PPS 50 Ω phase synchronization measurement interface. Accessed with an adapter.
(20) For more information about the sync test interface, see Manage Network Synchronization.
(21)
The optical indicator indicates the status of the LMT B interface.
Do not remove dust plugs from unused ports. Always insert dust plugs into ports
that are not in use by a cable connector.
RJ-45 SFP
Ge19729B
QSFP USB 3.1 Type C–48 V DC
Figure 6 Dust Plugs for RJ-45, SFP28, QSFP, USB, and Power Interfaces
Baseband Interfaces
271/1551-LZA 701 6001/1 Uen A | 2020-04-29
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