How to Configure a Virtual Tie Line 81
5When the Dallas user answers, press Conference again to connect all
four users.
Conference Calls Involving Site Codes and Off-Site Telephones
In Figure 9, you work in the Chicago office and want to establish a
conference call with someone in Atlanta, someone in Dallas, and
someone at an external telephone number, you:
1Dial the Atlanta site code (62) and then the extension.
2After the Atlanta user answers, press Conference and dial the Dallas site
code (63) and then the extension.
3When the Dallas user answers, press Conference again to connect all
three users.
4Press Conference again and dial the external telephone number.
If the site requires that you dial 9 to reach an outside telephone line, and
if the call is a long-distance call, the user might dial a number in area
code 367 using the digit sequence 913675551212.
5When the person answers, press Conference again to connect all four
users.
How to Configure a Virtual Tie Line
Configuring a working VTL connection between two systems involves:
■License Installation
■Dial Plan Configuration
■Verification of the Virtual Tie Line
License Installation ■You must obtain a license for VTLs. License levels are 2, 4, or 8 VTLs on
the NBX 100 system, and 2, 4, 8, 16, 24, or 48 VTLs on a SuperStack 3
NBX system.
■Each VTL license applies only to the NBX system on which it is
installed. To connect three sites by VTLs and to have each site support
up to 8 simultaneous active VTL connections, you must install a
separate license key for 8 VTLs on each of the three NBX systems.
■To increase the number of VTLs above one of the levels on a system,
you must add one or more incremental licenses of 2 VTLs each.