CallTTY TDD software 2.35
Description from the publisher
A program to communicate with phone TTY/TDD devices (Telecommunications Devices for the Deaf) via a sound card, without TTY modem. A simple interface between sound card and phone line or acoustic connection with phone handset are used.Together with "Virtual Audio Cable" software CallTTY can work via Skype Internet-phone, without additional hardware at all.
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