Chapter 8 PBX Tutorials
ISG50 User’s Guide
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2 Enter the name of the group (BRI1 in this example). Assume you want calls to be answered by the
Auto-Attendant, so select AA. Select the BRI ports that are to be members and click OK.
3 People from the outside world can now call the ISG50 using the ISDN numbers provided by your
local telephone company. The Default AA prompts the callers to dial the extension they would like
to reach. See Section 8.5.2 on page 156 for information on how to set up a dialing rule so that the
extensions on your network can connect to the ISDN.
8.5.2 Creating a Dialing Rule for ISDN
The following sections show you how to create outbound dialing rules (also referred to as Least Cost
Routing or LCR).
The LCRs determine which outside line the ISG50 should use to complete outbound calls. In our
example we want to use the BRI1 outbound line group to complete local calls.
Figure 124 Outbound Calls via ISDN
ISDN
1000
ISDN_call
BRI
ISG