Nortel Networks 302403-B - Manual (Page 7)

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conventional Ethernet repeater hub. If you are connecting
to another Ethernet hub or Ethernet switch, you need a
crossover cable unless an MDI connection exists on the
associated port of the attached device.
The 400-4TX MDA can operate at either 10 Mb/s or
100 Mb/s. The speed is determined through
autonegotiation with its connecting device.
For installation instructions, see “Installing an MDA ” on
page 17 .
100BASE-FX MDAs
There are two 100BASE-FX models:
• 400-2FX MDA
The 400-2FX MDA uses two longwave 1300 nm SC
connectors to attach devices over 62.5/125 micron
multimode fiber optic cable.
• 400-4FX MDA
The 400-4FX MDA uses four longwave 1300 nm
MT-RJ connectors to attach devices over 62.5/125
micron multimode fiber optic cable.
Both models (see Figure 2 ) can be used to attach
fiber-based 100 Mb/s connections to other compatible Fast
Ethernet devices.
Single-mode fiber cable is not supported.
302403-B.mkr Page 5 Friday, January 15, 1999 2:56 PM