User guide

left and right channels of the headsets to simulate stereo output.The following table lists the
audio format requirements supported by the IP Deskphone.
Audio Parameters Values
Audio Format PCM only
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)
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.
Avaya USB headset adapter with HID
When you enable the HID support for Avaya USB Mobile or Enhanced adapter, then the IP
Deskphone makes use of the UI elements on the adapter. Both type of USB headsets are
stimulus devices, as the IP Deskphone can have complete control of the LEDs. The following
table lists the features of the Avaya USB headset Adapter.
USB headset
Avaya 1140E IP Deskphone with SIP Software on Avaya Aura
®
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