Mine Site Technologies NS50, Руководство пользователя, Страница: 18 / 126

data and the fibre used for receiving data. This is illustrated in Figure 4: Fibre orientation of Upstream
and Downstream ports .
Figure 4: Fibre orientation of Upstream and Downstream ports
Due to the difference in the fibre orientation, MST composite cable and fibre optic cable can only be
connected between ports on NS50 devices marked with a tick in the matrix below.
Port 4 Port 3 Port 2 Port 1
Port 1
Port 2
Port 3
Port 4
Single- and Multi-Mode Cables
The NS50 is supplied from the factory with 1000BASE-LX single-mode SFP modules. Customers wishing
to interface to other cable standards, e.g. 100BASE-FX single or multi-mode, should contact MST to
arrange replacement of the appropriate SFP modules.
Description SFP Part Number (MST Order Number)
Single-mode 100BASE-FX SFP module W-SFP-LS38-A3S
Multi-mode 100BASE-FX SFP module W-SFP-LM38-A3S
Note:
• If replacing the single-mode SFP modules with multi-mode modules, the single-mode patch
lead between the SFP module and the MST Composite Cable connector on the inside of the
housing needs to be replaced with a multi-mode patch lead.
• JB11 junction boxes can be connected inline between any two units in the chain to supply power.
There is no need to isolate NS50 units to a single power source.
1.3.2 Ethernet Ports
The NS50 has four external Ethernet ports, that enable connection to other networking devices.
The four Ethernet ports also provide IEEE 802.3af PoE (Power over Ethernet) injector functionality,
allowing a single cable to be used for data and power to network devices. Each Ethernet port's functionality
can be configured by the web browser interface, or by centralised configuration management. For more
information on configuring Ethernet ports, see
Configuring the VLAN Port Map on page 67.
Revision A 18 NS50 User Manual
Understanding the NS50 Wireless Network Switch