Phybridge UniPhyer LB-UA2324, Описание системы

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System Description
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MGMT Ethernet Port connected to LAN for providing system out-band EMS/Telnet
control interface, such as system monitor, control or software upgrade.
Line Interface One or two RJ-21 connector (50-pin dual row header) for connecting
PhyAdapter lines.
Power Switch 0/1 (Off/On) located at rear of chassis by AC cord connection
1.4.4 Cooling System
The cooling system of the UniPhyer LB-UA2348 consists of two fans internal to chassis and additional
fan on the Internal Power Supply.
Features
The two chassis fans will be turned on when system temperature is higher than T
°
C and will be
turned off when system temperature is less than T-10
°
C (the temperature threshold T can be
configured). Default value of T is -40 C.
1.4.5 Line Interface Port Power
The UniPhyer Line Bridge ports always have power enabled on all the ports (if DSL service is enabled
or not). The port provides 54 V DC supply to power the Adapter and provide the POE compliant IEEE
voltage to the RJ45 port on the PhyAdapter. The UniPhyer Line Interface port will not draw power
unless a PhyAdapter is plugged into the RJ11 terminated port pair.
1.4.6 Over Current protection
The UniPhyer Line Interface will shut off power to any port with a short or excessive current draw.
Always ensure proper wiring with no shorts on the wire line interface for your UniPhyer installation.
1.4.7 Twisted Pair Wiring Limitations
The UniPhyer System with the LB-PA111 PhyAdapter will support connections on 24 AWG and 26
AWG twisted pair wire up to 1200 feet. The 1200 feet length does not include the Ethernet cable length
connected to the PhyAdapter. Ethernet cable length can be up to 300 feet but this length as well can be
dependant on the distance of the PhyAdapter to the UniPhyer.