Installation
Guidelines
Revised April 2000
DBS-EX23-530
2-5
Trunk Assignments for Single-Cabinet Systems
• Programming is not required to associate trunk ports with slot locations.
However, you must use programming to specify that a combination of
ISDN and analog trunks is installed, and you must also specify how many
ISDN channels are used.
• 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.
Table 2-2. ISDN and analog trunk assignments, DBS 40
Table 2-3. ISDN and analog trunk assignments, DBS 72
Trunk
Number
Fractional ISDN
using 16 Channels
Fractional ISDN
using 8 Channels
1
ISDN channel 16
Analog trunk 1
↓
↓
↓
8
ISDN channel 9
Analog trunk 8
9
ISDN channel 8
ISDN channel 8
↓
↓
↓
16
ISDN channel 1
ISDN channel 1
Note:
Since the DBS 40 supports a maximum of 16 trunks, all 23
channels of the ISDN cannot be used.
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
2
ISDN channel 23
Analog trunk 2
Analog trunk 2
↓
↓
↓
↓
8
ISDN channel 17
Analog trunk 8
Analog trunk 8
9
ISDN channel 16
ISDN channel 16
Analog trunk 9
↓
↓
↓
↓
16
ISDN channel 9
ISDN channel 9
Analog trunk 16
17
ISDN channel 8
ISDN channel 8
ISDN channel 8
↓
↓
↓
↓
24
ISDN channel 1
ISDN channel 1
ISDN channel 1
Содержание T-SMART DBS-EX23-530
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