Multitech ISIHP-4U Guide de l'utilisateur télécharger pdf (Page 14)

14 CommPlete 4000 Communications Server Overview

ISI5634PCI/8 Board

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RJ12 Line Jacks

Figure 2-3: ISI Board Connectors (ISI5634PCI/8 shown; other MultiModem ISI cards differ)

Note: Any cables connected to the CommPlete 4000 should be shielded to reduce interference.

Note that the two top expansion slots share a data interrupt signal on the PCI bus.

Consequently, if both slots are used, they must be occupied with identical devices (and the

device drivers must be identical). This is a constraint of PCI bus architecture. Also, the device

drivers must support interrupt-sharing. The drivers for the MultiTech ISI card do support

interrupt-sharing

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Shared Interrupt

for Top Slots.

Identical Devices Required.

Figure 2-3b. Top Slots Require Identical Devices

Serial Card Upgrades

As shown in Figure 2-3c, installation of expansion cards is simpler in the outer slots than in the

inner expansion slot.

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