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Interaction Media Server Technical Reference
Supported audio formats for Prompt Server
Interaction Media Server supports the following audio formats as prompts:
|
File type |
Extension |
MIME type |
Codecs |
Bits/Sample |
|---|---|---|---|---|
|
Wave file |
.wav |
|
G.711 MuLaw/ALaw |
8 |
|
Linear16bit |
16 |
|||
|
G.726 32-bit |
4 |
|||
|
GSM 6.10 |
- |
|||
|
TrueSpeech |
1 |
|||
|
G.722 8k |
8 |
|||
|
Sound file |
.snd |
audio/basic |
G.711 MuLaw |
8 |
|
Linear16bit |
16 |
|||
|
Simple Audio |
.au |
audio/basic |
G.711 MuLaw |
8 |
|
Linear16bit |
16 |
|||
|
audio/x-alaw-basic |
G.711 ALaw |
8 |
Note: Interaction Media Server supports only 8Khz sampling rates.
Prompt files transfer from the CIC server to Interaction Media Server through HyperText Transfer Protocol (HTTP) or HyperText Transfer Protocol Secure (HTTPS). Interaction Media Server determines the format of the audio file by the content type specified in the HTTP/HTTPS header—if transferred from the CIC server—or by the file name extension—if the file is local to the computer. If a prompt file is local, Interaction Media Server always considers files with the extensions of .snd and .au as using the MuLaw codec.
Note: To support headerless files using an ALaw codec, you must either change the .au or .snd extension mapping to allow the alaw MIME type or create a file extension, such as .alaw.