Digi 90031300 manual Types of Modem Cards, Modem Revision Description

Modem cards are located on the front of the chassis between the line card (labeled T1 and PWR) and the sync and terminal connections (labeled HOST IN, HOST OUT and TERMINAL). Six on-line indicators and one power indicator are found on the modem card faceplate. Refer to Figure 1 on page 1 for an overall view of theT1 Modem Bank.

Follow this procedure to replace a modem card:

1.Determine which modem card needs to be replaced. This will be indicated by running POST, using QuickManager, or observing the display panel window after the FEP/OS is loaded. There are two types of modem cards, and they can be interchanged in any way you want in your system. Table 7 illustrates the revision numbers and the differences between the types of modem cards.

Table 7		Types of Modem Cards
	Modem Revision	Description

0V.34 compliant modem. Connection rates as high as 28.8kbps. No new modem flash upgrades.

1V.34 compliant modem. Connection rates as high as 33.6kbps. Modem flash upgrades are allowable when they are available.

QuickManager will allow you to identify the revision of each modem card in your system. Figure 24 is an example screen showing that modem card 1 in this particular system has a revision of 0.

70 T1 Modem Bank