Polycom 3725-70003-009F Manual De Usuario

ReadiVoice Administration & Maintenance Guide

180

Proprietary & Confidential

  

The default prompt set includes a file, silence.wav, containing only a very 
brief silence. If you want to replace a specific prompt with nothing (that is, you 

don’t want any message to play in the situation where that prompt is called), 
you can replace it with a copy of silence.wav renamed to replace the .wav file 

that you don’t want played. 
The format of the .wav files depends on the type of bridges in your system: 
InnoVox 480 bridges: All .wav files must be in 4-bit IMA ADPCM format 
(8000 samples/second, 16-bit mono, compressed 4:1). If your sound editor 
application offers multiple format options, use the DVI option when saving. 
InnoVox 4000 bridges: All .wav files must be in 8-bit 

µ-law format 

(8000 samples/second, 16-bit mono). If you’re upgrading from an 
InnoVox 480 bridge and want the same prompt set, you should create the 

µ-law encoded .wav files from the original recordings at 8000 samples/sec., 

16-bit mono (or higher quality). Converting a 4-bit IMA ADPCM into 8-bit 

µ-law won’t provide noticeable quality improvements. 
You can use the file command to determine whether a .wav file is in ADPCM 

or 

µ-law format. 

 shows an example of checking two .wav files. 

jaba </rahome> cnow> file bridge/sound/1/adpcm/0.wav 
bridge/sound/1/adpcm/0.wav:     WAVE file, ADPCM format (mono)
jaba </rahome> cnow> file bridge/sound/1/g711/0.wav
bridge/sound/1/g711/0.wav:      WAVE file, G711 format (mono)
jaba </rahome> cnow>