Enterasys Networks CSX7000 Manuel d'utilisateur Page 94

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USER’S GUIDE
94 CyberSWITCH
CONNECTING ADAPTER INTER-BOARD CABLES
There are three possible cables used to connect adapters: flat, crossover, and LCD. Flat cables
connect adapters with like connectors, and crossover cables connect the flat cables of adapters with
differing connectors. LCD cables apply to former Network Express products (NE2000-II, 4000,
5000) only. These cables connect the system’s liquid crystal display (LCD) to the WAN adapter
group.
CONNECTING MULTIPLE ADAPTERS
WAN and DM adapters need inter-board cables to communicate with each other over an inter-
board bus. (LAN, V.35, RS232 and encryption adapters never require inter-board cabling.) The
WAN adapters use either a Time Domain Multiplexing (TDM) bus, a Multiple Vendor Integration
Protocol (MVIP) bus, or both. The DM adapters use an MVIP bus only. Each adapter has at least
one bus connector, and some (such as the PRI-23 and PRI-23/30) have both.
The following table classifies the adapters according to inter-board connector type:
All TDM and MVIP connectors, if present, are along the top of the card as shown in the System
Adapters Appendix. If you are unsure of the location of the adapter’s connectors, refer to the adapter
illustrations for clarification.
The type of inter-board bus (or buses) you should install depends upon your unique system
configuration. The following suggestions should help you achieve the cleanest connections:
Adapter Inter-Board Connector Type
LAN (Ethernet) (none)
V.35 (none)
RS232 (none)
BRI-1 (none)
BRI-4 TDM
PRI-8 TDM
PRI-23 both TDM and MVIP
PRI-23/30 both TDM and MVIP
Expander TDM
DM-8 MVIP
DM-24 MVIP
DM-24+/30+ MVIP
encryption (DES/RSA) (none)
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