User's Manual

Chapter 8 PBX Tutorials
ISG50 User’s Guide
160
The following figure shows the three examples (1 ~ 3).
Figure 125 ISDN Network Configuration
8.6.1 Example 1: Small/Medium Business
For a small/medium company, the ISG50 is the only device that forwards ISDN calls between the
company and the telephone service provider.
• For an example of configuring ISDN settings, see Section 8.5 on page 154.
ISDN Line
PBX
PBX
A
B
C
D
E
F
1
23
ISG
ISG
ISG