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2-6 DBS-EX23-530 Revised April 2000
Table 2-4. ISDN and analog trunk assignments, DBS 96
Trunk Assignments for Double-Cabinet Systems
• When ISDN is used in a two-cabinet system, the number of ISDN channels
that can be assigned in each cabinet depends on the master/slave
designation.
• Fractional ISDN per port assignments require the VB-43511A version of
the loop start trunk card. The older VB-43511 version may be used with
fractional ISDN but requires that the trunks be assigned in blocks of 8.
The following table shows the maximum number of ISDN channels that
can be assigned in two-cabinet systems.
Trunk
Number
23-Channel ISDN Fractional ISDN
using 16 Channels
Fractional ISDN
using 8 Channels
1 Analog trunk 1 Analog trunk 1 Analog trunk 1
↓↓↓↓
8 Analog trunk 8 Analog trunk 8 Analog trunk 8
9 Analog trunk 9 Analog trunk 9 Analog trunk 9
10 ISDN channel 23
↓↓↓↓
16 ISDN channel 17 Analog trunk 16 Analog trunk 16
17 ISDN channel 16 ISDN channel 16 Analog trunk 17
↓↓↓↓
24 ISDN channel 9 ISDN channel 9 Analog trunk 24
25 ISDN channel 8 ISDN channel 8 ISDN channel 8
↓↓↓↓
32 ISDN channel 1 ISDN channel 1 ISDN channel 1