Avaya T1/FT1 User Manual download pdf (Page 30)

T1/FT1 Adapter Module

Supplement

3-2

118943-B Rev 00

In the example above, the first ISDN BRI module (in Module slot 3) has the

resources to bring up a second B channel (thus using 2 circuits). The serial adapter

in Module slot 4 uses a third circuit. The second ISDN BRI adapter module (in

Module slot 5), can have only 1 B channel configured because the serial adapter

module (in Module slot 4) has priority and is allocated a circuit over anything in

Module slot 5. In this case, there are not enough circuits left to utilize the second

B channel on the ISDN BRI adapter in Module slot 5. In this example, if you

wanted to have both B channels on both ISDN BRI adapters configured, you

would have to remove the serial card from Module slot 4.

Table 3-1 lists examples of valid WAN adapter module combinations.

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Avaya T1/FT1 User Manual Page 30