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Installation Guidelines
Revised April 2000 DBS-EX23-530 2-7
Table 2-5. Maximum ISDN assignments for two-cabinet systems
• Two-cabinet systems use the same trunk numbering scheme as single-
cabinet systems: analog trunks are numbered from “1” upward; ISDN
trunk channels are numbered downward from the highest channel used.
Tables 2-6 through 2-10 show trunk numbering for two-cabinet systems
using the maximum number of ISDN channels.
Table 2-6. ISDN and analog trunk assignments, DBS 40 + 40 (16-channel fractional ISDN in the
slave)
System Size Master Slave
DBS 40 + DBS 40 8 analog trunks 16 ISDN trunks
DBS 72 + DBS 72 16 analog trunks 23 ISDN trunks
1 analog trunk
DBS 96 + DBS 40 23 ISDN trunks
9 analog trunks
16 ISDN trunks
DBS 96 + DBS 72 23 ISDN trunks
9 analog trunks
23 ISDN trunks
1 analog trunk
DBS 96 + DBS 96 23 ISDN trunks
9 analog trunks
23 ISDN trunks
9 analog trunks
Trunk
Number
Master Cabinet Slave Cabinet
1 Analog trunk 1
↓↓ Ν/Α
8 Analog trunk 8
9 ISDN channel 16
↓ N/A ↓
16 ISDN channel 9
17 ISDN channel 8
↓Ν/Α ↓
24 ISDN channel 1