3Com NBX 100 Administrator's Manual - page 89
How to Configure a Virtual Tie Line
89
Conference Calls Involving Site Codes and Off-Site Telephones
In
Figure 11
, 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:
1 Dial the Atlanta site code (62) and then the extension.
2 After the Atlanta user answers, press Conference and dial the Dallas site
code (63) and then the extension.
3 When the Dallas user answers, press Conference again to connect all
three users.
4 Press 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.
5 When 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
■
Updating the Extension List
■
Adding VTL Devices to the Pretranslators (Optional)
■
Verification of the Virtual Tie Line
You can enable silence suppression and different levels of audio
compression for your VTL calls. For more information on how silence
suppression and compression affect bandwidth, see
“Audio Settings”
on
page 257
. To change the system-wide settings for silence suppression
and compression on VTL calls, use the NBX NetSet utility to edit the audio
settings: System Configuration > System Settings > Audio Settings.
License Installation
■
You must obtain and install a license to enable VTLs.
■
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.