1-4 About the 6500PLUS
Hardware
Enclosures and Backplanes
Introduction The two types of enclosures for the 6500PLUS are:
• Standalone
• Modulus
Standalone
Enclosure
A standalone enclosure (Figure 1-1) holds just one card, which must be a processor
card. A standalone unit supports up to six X.25 or terminal ports depending on the
type of processor card installed.
Figure 1-1. 6500PLUS Standalone Enclosure
Modulus Enclosure The Modulus enclosure provides a 6500PLUS node with space for one or more
processor cards and several support cards, such as auxiliary processor cards, I/O
cards, or NSO cards (Figure1-2).
Figure 1-2. Modulus 21 Enclosure