User's Manual

Chapter 8 PBX Tutorials
ISG50 User’s Guide
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2 Select the ISDN_call entry’s checkbox in the Association column and click OK.
3 You can now use the telephones that are part of the Basic authority group to make outbound calls
using the ISDN connection. The following figure summarizes the outbound call process for this
example.
8.6 ISDN Network Configuration Examples
The following section shows you some examples of deploying the ISG50 using ISDN in
organizations of various sizes.
8005555555
1001
Caller dials
8005555555
The ISG50
matches this number
with the ISDN_call
LCR, routes the call to
sends the call
to 8005555555.
The ISG50
ISDN
ISDN.
BRI
ISG
BRI