Tty Mode; Hac Mode; Use Internet Calling - Samsung Galaxy S Relay User Manual

TTY Mode

A TTY (also known as a TDD or Text Telephone) is a
telecommunications device that allows people who are deaf,
hard of hearing, or who have speech or language disabilities,
to communicate by telephone.
Your phone is compatible with select TTY devices. Please
check with the manufacturer of your TTY device to ensure
that it is compatible with digital cell phones.
Your phone and TTY device will connect via a special cable
that plugs into your phone's headset jack. If this cable was
not provided with your TTY device, contact your TTY device
manufacturer to purchase the connector cable.
1. From the main Call settings page, tap TTY mode.
2. Tap TTY Full, TTY HCO, or TTY VCO to activate the
feature, or TTY Off to deactivate the feature. Off is the
default setting.
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HAC Mode

This menu is used to activate or deactivate Hearing Aid
Compatibility for this device.
From the main Call settings page, tap the Hearing aids
field to activate the feature (green check mark), or tap
it again to deactivate the feature. Off is the default
setting.

Use Internet Calling

This menu is used to setup and configure your Internet
Calling feature.
From the main Call settings page, tap the Internet
calling field, and then select an available option.
Choose from: For all calls when mobile network
available, Only for Internet calls, or
Ask for every call.