MANUAL TEST FUNCTIONS
42
In the Digital Audio dashboard, Channels indicates which side of conversation is being
demodulated. Select Mixed in order to hear both sides of the phone conversation, Primary to
hear only the handset, or Secondary to select the audio coming from the switch. To listen to
normal analog audio, Digital Decode should be unselected.
The Codec indicates the type of modulation that is used. μ-law is used primarily in North
America and Japan while a-law is prominent in the rest of the world.
To adjust Volume and Gain Control, the controls are on the default audio dashboard. You can
access the Audio dashboard by pressing the
A
button, or by selecting the Audio button on the
Digital Audio dashboard.
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