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<html><head><meta content="text/html; charset=ISO-8859-1" http-equiv="content-type"><title>DTM</title></head>
<body><h1><a name="DTM"></a>DTM</h1>Dual Transfer Mode (DTM) allows the
user to start a voice call on an ongoing data call or send data during
an ongoing voice call over the same frequency channel.</body></html>