AudioCodes Mediant 4000 SBC, User Manual

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CHAPTER 37 Loading Auxiliary Files
Mediant 4000 SBC | User's Manual
■ Coders: G.711 A-law, G.711 µ-law, or G.729
■ Rate: 8 kHz
■ Resolution: 8-bit
■ Channels: mono
The PRT file can include prerecorded audio tones of different coders (e.g., some with G.711 and
some with G.729). The prerecorded tones are played repeatedly. This allows you to record only part
of the tone and then play the tone for the full duration. For example, if a tone has a cadence of 2
seconds on and 4 seconds off, the recorded file should contain only these 6 seconds. The device
repeatedly plays this cadence for the configured duration. Similarly, a continuous tone can be
played by repeating only part of it.
The following figure shows an example of the creation of the PRT file containing multiple user-
defined tones ("acUserDefineTone<Index>") through the DConvert utility:
AMD Sensitivity File
The device is shipped with a default, pre-installed AMD Sensitivity file for its Answering Machine
Detection (AMD) feature. This file includes the detection algorithms for detecting whether a human
or answering machine has answered the call, and is based on North American English. In most
cases, the detection algorithms in this file suffice even when your deployment is in a region where a
language other than English is spoken. However, if you wish to replace the default file with a
different AMD Sensitivity file containing customized detection algorithms, please contact the sales
representative of your purchased device for more information.
The AMD Sensitivity file is created in .xml format and then converted to a binary .dat file that can be
installed on the device. The XML-to-binary format conversion can be done using AudioCodes
DConvert utility. For more information on using this utility, refer to
DConvert Utility User's Guide .
Only one AMD Sensitivity file can be installed on the device. To install a new AMD Sensitivity file,
use one of the following methods:
■ Web interface: Auxiliary Files page - see Loading Auxiliary Files .
■ TFTP during initialization: Configure the [AMDSensitivityFileName] parameter, and then copy
the AMD Sensitivity file to the TFTP directory.
■ Automatic Update feature: Configure the [AMDSensitivityFileUrl] parameter through ini file.
For more information, see
Automatic Update Mechanism .
For more information on the AMD feature, see Answering Machine Detection (AMD) .
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