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DEFINITY Enterprise Communications Server Release 8.2
Overview
555-233-002
Issue 1
April 2000
System Management Features
79
Trunk Management
Figure 11. DEFINITY ECS and ISDN
1
DEFINITY ECS
6
Private ISDN
2
DEFINITY ECS
7
Public ISDN
3
DEFINITY ECS
8
Public and Private Networks
4
Basic Rate Interface Telephone
9
Central Office Switch
5
Passive Bus
10
Tandem Switch
8
8
4
4
4
10
?
2
6
7
3
9
1
5
233002_1.book Page 79 Monday, February 21, 2000 8:28 AM