AudioBinary

`audio/3gpp2`

3GPP2 Audio

Reference for audio/3gpp2, the MIME type for audio in the 3GPP2 container format used in CDMA mobile networks.

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Expected extensions: .3g2

HTTP Content-Type Header

HTTP Header

Content-Type: audio/3gpp2

Associated File Extensions

.3g2

Quick Facts

MIME Type	audio/3gpp2
Category	Audio
Type	Binary
Extensions	.3g2

Common Usage

3GPP2 is the container format for CDMA mobile networks (Verizon, Sprint legacy). It supports AMR and EVRC codecs optimized for CDMA voice encoding.

Primarily encountered in older CDMA phone recordings and voicemail systems.

Code Examples

HTML

<!-- Link or embed with explicit type -->
<link rel="stylesheet" href="file.3g2" type="audio/3gpp2">

<!-- Or for script/media elements -->
<script type="audio/3gpp2" src="file.3g2"></script>

Node.js

// Express.js
app.get('/file', (req, res) => {
  res.type('audio/3gpp2');
  res.send(data);
});

// Node.js http
res.writeHead(200, { 'Content-Type': 'audio/3gpp2' });

nginx

# nginx.conf — add to types block or use default
types {
    audio/3gpp2  3g2;
}

# Or set for a specific location
location /api/ {
    default_type audio/3gpp2;
}