Filter
Top Products
94 CHAPTER 2: DIAL PLAN
Enabling Audio
Compression
You can enable or disable ADPCM (Adaptive Differential Pulse Code
Modulation) audio compression on a system-wide basis for VTLs. The
default condition disables audio compression.
Do not enable any of the bandwidth controls unless you have network
congestion problems you cannot solve otherwise. The bandwidth
controls can reduce network traffic, but they result in compromises to
audio quality.
When you enable VTL audio compression on an NBX system the VTL
software attempts to use audio compression on all VTL calls. If the NBX
system on the other end of the VTL call is not configured to support
audio compression, the local VTL software attempts to find a compatible
communications mode.
To enable VTL audio compression:
1 In the NBX NetSet - Main Menu window, click System Configuration.
2 On the System Settings tab click Audio Settings.
3 Click the Audio Compression on VTL Calls check box and then click OK.
Enabling
System-wide Silence
Suppression
You can enable or disable silence suppression on a system-wide basis for
VTLs. The default condition disables silence suppression. When you
enable VTL silence suppression on an NBX system, the VTL software
attempts to use silence suppression on all VTL calls. If the other NBX
system is not configured to support silence suppression, the local VTL
software attempts to find a compatible communications mode.
Do not enable silence suppression unless you have network congestion
problems you cannot solve otherwise. Enabling silence suppression can
reduce network traffic, but the result is a compromise to audio quality.
Rerouted VTL calls The number of calls that did not reach their destination
when attempted over VTL channels, and were rerouted using
another device.
Last reset command The date and time of the most recent Reset for this VTL.
Last system reboot The date and time of the most recent reboot of the NBX
system.
Table 20 Virtual Tie Line Statistics Fields
Field Description