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| Configuring the Avaya 1140E IP Deskphone | |
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Audio Parameters | Values |
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Subframe size | 2 |
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Bit Resolution | 16 bits |
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Frequency Type | Continuous (0) or Discrete (> 0) |
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Sample Frequency | If Continuous, default to 16 KHz. If |
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| Discrete, 8 KHz, 16KHz or 8KHz |
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| multiple. Preference is given to |
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| 16KHz audio, if supported |
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Audio Channel | Mono (1) or Stereo (2) |
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After you select the format and the Set Interface command is sent, the USB headset runs in Generic Mode 1 operation (both audio and HID) or Mode 2 operation (audio only). If the headset runs in Mode 1 operation, the IP Deskphone configures the task or callback to communicate with the USB HID control events between the IP Deskphone and the headset. You can insert the headset during an active call. The IP Deskphone synchronizes the headset state machine of the IP Deskphone to the current state of the headset to ensure the LED match status.
During the call, if the audio negotiated between the two parties is set to 8KHz audio and the IP Deskphone is setup for 16KHz USB headset audio, the IP Deskphone performs the transcoding between 8KHz audio to 16KHz audio. Likewise, if the audio negotiated between the two parties is set to 16KHz audio and the headset supports only 8KHz audio, the IP Deskphone performs the transcoding between 16KHz audio to 8KHz audio.
Generic USB headset
When a generic USB headset (or supported headset with HID command disabled) is attached to the IP Deskphone and selected, it behaves like a wired headset. All call controls, on hook, off hook, mute, volume up, and volume down are performed using the keys on the IP Deskphone. The IP Deskphone does not use the User interface elements on the headset, including LEDs if present. When the USB headset is selected, the voice path to or from the USB headset is used in an active call.
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