Enterasys BL-89451ENT, User Manual

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Mid-Span Power Unit 1-Port User’s Guide 1-1
1
Introduction
Functions and Features
The BL-89751ENT, BL-89451ENT, BL-89551ENT, and BL-89651ENT 1-port Mid-Span
Power Unit supports applications in which AC power is difficult to access, such as VoIP
phones, wireless LAN access points or Internet security cameras.
The Enterasys 1-port Mid-Span Power Unit acts as a “patch panel” and adds ~48 VDC to
unused (non-data) wires in a standard Category 5, 5e, or 6 Ethernet cable. The Mid-Span
Power Unit delivers both data and power over a single standard Ethernet cable.
Main features of the 1-port Mid-Span Power Unit include:
• Remote power feeding; powered devices receive power over the Ethernet cable
• Centralized power distribution; one powered device can be connected to a single unit
• IEEE 802.3af standard powering scheme
• Acts as a normal patch panel and places ~48 VDC on unused Ethernet pins
• Total power available: 15.6 W per port per IEEE specification
• Automatic power-control circuitry to detect a powered device before providing power
• Double-fused power surge protection
Port Indicators
Each port has its own LEDs which display:
• Detect (green)
• Fuse blown (yellow)
• Power from chassis (green)
• Power forwarding (green)
For more information on Troubleshooting, refer to Table 3-1 on page 3-1.