Alcatel GO FLIP User Manual page 49

Keypad Vibration
Press to activate/deactivate keypad vibration.
TTY
TTY mode can be used by people who are deaf, have poor hearing or
speech impairments.
Press to set TTY to full, VCO, HCO or turn off TTY.
Hearing Aid Compatibility (HAC)
Hearing aid mode can be used by people who are deaf, have poor
hearing or speech impairments. After connecting the phone and
hearing aid device, calls are linked to a relay service, which converts
incoming speech to text for the person using the hearing aid and
converts outgoing text from the hearing aid device to a spoken voice
for the person on the other end of the conversation.
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