Avaya 1040E User Manual

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.

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.

Subframe size

2

Bit Resolution

16 bits

Frequency Type

Continuous (0) or Discrete (> 0)

Sample Frequency

If Continuous, default to 16 KHz. If 
Discrete, 8 KHz, 16KHz or 8KHz 
multiple. Preference is given to 
16KHz audio, if supported

Audio Channel

Mono (1) or Stereo (2)