AudioCodes Mediant 500 E-SBC, Руководство пользователя

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User's Manual 39. Software Upgrade
Version 6.8 555 Mediant 500 E-SBC
For example, to configure the dial tone to 440 Hz only, enter the following text:
[NUMBER OF CALL PROGRESS TONES]
Number of Call Progress Tones=1
#Dial Tone
[CALL PROGRESS TONE #0]
Tone Type=1
Tone Form =1 (continuous)
Low Freq [Hz]=440
High Freq [Hz]=0
Low Freq Level [-dBm]=10 (-10 dBm)
High Freq Level [-dBm]=32 (use 32 only if a single tone is
required)
First Signal On Time [10msec]=300; the dial tone is detected after
3 sec
First Signal Off Time [10msec]=0
Second Signal On Time [10msec]=0
Second Signal Off Time [10msec]=0
39.1.2 Prerecorded Tones File
The CPT file mechanism has several limitations such as a limited number of predefined
tones and a limited number of frequency integrations in one tone. To overcome these
limitations and provide tone generation capability that is more flexible, the Prerecorded
Tones (PRT) file can be used. If a specific prerecorded tone exists in the PRT file, it takes
precedence over the same tone that exists in the CPT file and is played instead of it.
Notes:
•
The PRT file only generates (plays) tones; detection of tones is according to the
CPT file.
•
Playing tones from the PRT file does not requires DSP resources. For local
generation of tones, the device requires DSP resources. In addition, if DSPs are
being used in a current call (for whatever reason), only local tone generation is
supported (tone play from the PRT file is not supported).
•
For SBC calls, the PRT file supports only calls that use the G.711 coder.
•
For SBC calls, the PRT file supports only the ringback tone and hold tone.
The PRT is a .dat file containing a set of prerecorded tones that can be played by the
device. Up to 40 tones (totaling approximately 10 minutes) can be stored in a single PRT
file on the device's flash memory. The prerecorded tones are prepared offline using third-
party recording utilities and combined into a single file, using AudioCodes DConvert utility
(refer to the document,
DConvert Utility User's Guide for more information).
The raw data files must be recorded with the following characteristics:

Coders: G.711 A-law or G.711 µ-law

Rate: 8 kHz

Resolution: 8-bit

Channels: mono
Once created, the PRT file must then be loaded to the device, using the Web interface (see
''Loading Auxiliary Files'' on page
551 ).