Glossary
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Talk Time
The length of time a fully charged phone can be powered on and actively transmitting or receiving a call.

Tri-Mode
A tri-mode phone can operate using 800mHz Analog, 800mHz Digital and 1900 mHz PCS bands and modes.

TTY/TDD (Telecommunications Devices for the Deaf)
The primary tool used by the hearing impaired for a telephone conversation.