[speex-dev] Speex and TTY?

Jim Tobias tobias at inclusive.com
Sun Nov 9 03:45:42 PST 2003


Deaf people use a special "text telephone" called a TTY to communicate
over the phone.  TTYs in the US and UK employ Baudot, a 5-bit FSK
protocol that uses 1300Hz and 1500Hz tones at 45 or 50 bps.

1. Could encoding/decoding these tones work over Speex in VoIP?
2. Is anyone (meaning "are YOU") interested in R&D in this direction?
Satisfaction in addressing real human needs and a remote chance of
earning lunch money are guaranteed.

Please reply off-list.

Jim Tobias
Inclusive Technologies
tobias at inclusive.com
732.441.0831 v/tty

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