T.22 Are the specifications for converting voice files available?

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Yes they are available.  See VCNVT.C (or VCNVT.EXE) for conversion examples.
also, the file format is described in VOICE.TXT.  For decoding CELP data, the 
respective filename is "CELPC.*". Those archives could be obtained from 
several ftp servers and public mailbox systems.

Top Document: ZyXEL modem FAQ List v4.2, Nov 20 1995, Part 3 of 5 [Technical FAQs]
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