AT&T Definity 6211 Bedienerhandbuch Seite 133

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Seitenansicht 132
ISDN trunks
Issue 4 May 2003 133555-233-767
Figure 4. Communication Manager and ISDN
Multiple subscriber number (MSN) - limited
The ISDN standard MSN feature lets customers assign multiple extension to a
single BRI endpoint. The MSN feature works with BRI endpoints that allow the
channel ID IE to be encoded as “preferred.”
1
System running Communication Manager
6
Private ISDN (can be carried over
ATM-CES)
2
System running Communication Manager
7
Public ISDN (can be carried over
ATM-CES)
3
System running Communication Manager
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
Seitenansicht 132
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