How to Configure a Virtual Tie Line 97
Adding VTL Devices
to the Pretranslators
(Optional)
If you optionally added a pretranslator to the dial plan to reformat the
information on incoming calls, you must add the VTL devices to that
pretranslator.
To add the VTL devices to the pretranslator:
1 In the NBX NetSet - Main Menu window, click Dial Plan.
2 Click the PreTranslators tab.
3 In the scroll list, select VTL.
4 Click the Devices Using button.
5 In the Devices Using Pretranslator window, scroll down in the Devices Not
Using Pretranslator list until you see the devices associated with VTLs. For
a 4-digit dial plan, the VTL device extensions range from 6500 through
6523. For a 3-digit dial plan, VTL device extensions range from 623
through 630.
6 Select the first VTL device extension.
7 Scroll until you can see all of the VTL device extensions.
8 Simultaneously press the Shift key and click the last VTL device extension
to select the entire block of VTL device extensions.
9 To move all VTL device extensions to the Devices Using Pretranslator list,
click <<.
Verification of the
Virtual Tie Line
After you have configured the VTLs on each of two NBX systems, you
must verify that the VTL connection works properly.
To verify that a working VTL connection exists between two systems, you
must verify that:
■ Local System Verification — Verify that the configured VTLs appear on
each system.
NBX 100
4-digit dial plan
The default dial plan for an NBX 100 system is 3-digit. If you
convert to a 4-digit dial plan, you must manually change
each 3-digit extension to a 4-digit extension. For VTLs, you
can select any unused 4-digit extension from the external
extension range (6000–7999).
NBX 100
3-digit dial plan
623–630
Table 19 Virtual Tie Line Extension Ranges (continued)
Platform Extension Range
To Next Page
Loading...