Operations during a call

Adjust the receiver volume

Press R to increase, and press S to decrease.

Speech Quality Adjust

Touch

  1. [EC Level]
  2. Adjust the level of echo cancellation.
  3. [NR Level]
  4. Reduce the noise generated in the surrounding environment without changing the microphone volume. Use this function when the voice of caller is not clear.
  5. [MIC Level]
  6. Adjust the level of microphone gain.

Mute your voice

Touch to mute or not to mute your voice.

Switching between speaking voice output destinations

Touching each time switches speaking voice output destinations between the smartphone/cell-phone and the speaker.

Viewing call records during a call

Touch to enter the call record list. Touch on a contact person to directly make the second call.

Viewing contacts during a call

Touch to enter the contact list. Touch on a contact person to directly make the second call.

Output the dial tone

Touch to display the tone input screen. You can send tones by touching desired keys on the screen.

Call-waiting

When you receive a new call while talking on the phone, you can answer the newly received call by touching . The current call is put on hold. Touch the caller name or , the caller will change to the other one.

When you touch , the current call will end to be switched to the call waiting on hold..