Nortel Media Gateway 3200 User Manual page 75

H.248 User's Manual
6.4.2.2.5 Converting a Modified CPT ini File to a dat File with the Download
Conversion Utility
After modifying the original CPT ini file (supplied with the MG 3200's software package),
you can use the Download Conversion Utility to convert the modified file into a dat binary
file. You can only send the dat file to the MG 3200. The ini file cannot be sent.
To convert a modified CPT ini file to a binary dat file, Run the executable Download
Conversion Utility file, DConvert240.exe. For more information, refer to the Appendix,'
'Utilities'' on page 353.
After making the dat file, send it to the MG 3200 using one of the folliwing:
The Embedded Web Server GUI's Auxiliary Files. (Refer to ''Auxiliary Files Download''
on page 199.)
or
The BootP/TFTP Server to send to the MG 3200 the MG 3200's ini file (which
simultaneously downloads the Call Progress Tone dat file, provided that the MG
3200's ini file parameter CallProgressTonesFilename is defined and provided that both
files are located in the same directory.) (Refer to the Appendix, ''BootP/TFTP Server''
on page 223).
6.4.2.3 Playing Prerecorded Tones (PRT)
The Call Progress Tones and the User-Defined Tones mechanisms have several
limitations such as limited number of predefined tones, or limited number of frequency
integrations in one tone. To solve these problems and provide a more flexible tone
generation capability, prerecorded tones and play can be downloaded to the MG 3200 and
be played using regular tones generation commands.
6.4.2.3.1 PRT File Configuration
The PRT file that should be downloaded to the MG 3200 is a binary dat file, which was
created using The DConvert utility. The tones should be recorded (or created using a
Signaling Editor) if the user intends to download them in separate PCM files. The PCM
files should include the following characteristics:
Coder: G.711 A-law, G.711 µ -law or Linear PCM.
Rate: 8 kHz
Resolution: 8-bit
Channels: mono
The PRT module plays the recorded tone repeatedly. This provides the ability to record
only part of the tone, while still playing it for a full duration. For example, if a tone has a
cadence of 2 seconds on and 4 seconds off, the recorded file should contain only the 6
seconds of the cadence. The PRT module repeatedly plays this cadence for the configured
duration. In the same manner, a continuous tone can be played by repeating only part of it.
After the PCM files are properly prepared, these files should be converted into one dat file
using the DConvert utility For more information regarding the DConvert utility, and how to
make a dat PRT file, refer to the Appendix, ''BootP/TFTP Server'' on page 223.
Version SN09
6. MG 3200 Initialization & Configuration Files
75 October 2006