![16.Microphone:](/images/new-backgrounds/198056/19805615x1.webp)
15.Option (#) Button: (Option) Press to change the displayed telephone number into 7, 10, or 11 digit DIALING mode during Caller ID callback.
16.Microphone:
17.CHARGE CONTACTS: For charging the BATTERY PACK inside the HANDSET. We recommend cleaning the CHARGE CONTACTS periodically with a damp cloth.