This software enables communication with TTY/TDD devices through sound card or Skype internet-phone without needing a TTY modem. Ideal for the deaf, the software enables access to telecommunication services with ease.

With the use of "Virtual Audio Cable" software, CallTTY goes beyond traditional phone lines and can also work via Skype Internet-phone. This means that users do not need additional hardware for the program to work in a virtual setting.
CallTTY provides a simple and effective way for individuals with hearing disabilities to communicate effectively and efficiently. The software's user-friendly interface makes it easy for anyone to navigate and use its features to their advantage.
Overall, CallTTY is a valuable tool for those who rely on TTY/TDD devices and need a reliable and efficient way to communicate. Its versatility and compatibility with various communication channels make it a top choice for those looking to establish clear communication lines.
Version 2.35: Sound device with number above ten can be used now.