User`s guide

Dialogic
®
System Release 6.0 PCI for Windows
®
Release Update, Rev 62 — January 30, 2008 89
Dialogic Corporation
1.23.4 Documentation
The online bookshelf provided with Dialogic
®
System Release 6.0 PCI for Windows
®
contains information about all system release features including features for application
development, configuration, administration, and diagnostics.
For more information about PDK Trace, see the Dialogic
®
System Software Diagnostics
Guide.
Note: The online bookshelf has not been updated for this feature, so the new option is not
currently documented in the Dialogic
®
System Software Diagnostics Guide.
1.24 Ability to Lower or Disable White Noise
With the Service Update, the user can lower the white noise gain or disable the injection of
white noise entirely by adding a new parameter to the CONFIG file.
1.24.1 Feature Description
Users can lower the white noise gain or disable the injection of the white noise entirely
when the white noise produces a distracting “hiss” noise during conference calls. The user
can control the amount of white noise by adding the parameter, 0x2c22, to the CONFIG
file and uncommenting out the desired option.
Number: 0x2c22
Description: Add the parameter to the CONFIG file to disable the injection of white noise
entirely or to set a value that reduces the level of the white noise.
Values:
• 0 (disables white noise gain completely). Use this setting if white noise is not desired.
Note: When white noise is disabled, the user will have no “noise” to indicate that
the application is still working; therefore, the user may want the 0xfff setting
instead.
• 0xfff (sets white noise gain to a very low value). Use this setting if some small level of
noise is desired so that there is not complete silence.
• 0x4285fc (sets the white noise gain to the default of -43 dB). This value does not have
to be set by the user; it is the default value used if the parameter is omitted from the
CONFIG file.
Example:
The following is an example for disabling white noise:
[0x2c]
SetParm=0x2c22, 0 ! Disables white noise gain
!SetParm=0x2c22, 0xfff ! Sets the white noise gain to a very low value
!SetParm=0x2c22, 0x4285fc ! Sets the white noise gain to the default of -43 dB