How to Configure a Virtual Tie Line 87
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.
■Remote Access Verification — Verify that each of the systems can
access each other.
■Placing Telephone Calls — Verify that telephone calls can be made
between all pairs of connected systems in both directions.
Local System Verification
On each system you must verify that you can view the VTLs using the NBX
NetSet utility. To verify that you can view the local VTLs:
1In the NBX NetSet - Main Menu window, click Device Configuration.
2Click the Virtual Tie Lines tab.
3Verify that all of VTLs you have configured appear in the list.
In our example, if you perform this verification test on the Chicago NBX
system, the results appear as shown in Figure 12.
Figure 12 Example: Virtual Tie Lines Tab