RFC 978 (rfc978) - Page 1 of 5

Voice File Interchange Protocol (VFIP)

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Network Working Group                            J. K. Reynolds (ISI)
   Request for Comments:  978                   R. Gillmann (Inner Loop)
                                            W. A. Brackenridge (Alembic)
                                               A. Witkowski (Inner Loop)
                                                         J. Postel (ISI)
                                                           February 1986

   
                 VOICE FILE INTERCHANGE PROTOCOL (VFIP)
   

STATUS OF THIS MEMO

   This memo describes a proposed voice file interchange format for use
   in the ARPA-Internet community.  Suggestions for improvement are
   encouraged.  Distribution of this memo is unlimited.

1.  INTRODUCTION

   The purpose of the Voice File Interchange Protocol (VFIP) is to
   permit the interchange of various types of speech files between
   different systems.  Currently, there are many different types of
   voice implementations, but no specific standard has been set with an
   eye towards compatability between these systems.  With the increasing
   interest and development of voice, specifically in Multimedia Mail,
   there is an increased need to include standardized speech into a
   common data structure.

   The Voice File Interchange Protocol defines a header to describe the
   voice data.  The 18-byte header contains the identifier, the header
   version number, the header length, a DTMF mask for Touch-Tones, the
   recording rate in bits per second, the total time in deci-seconds
   (tenths of a second), and the encoding/recording method (see
   Figure 1).

2.  THE VOICE FILE INTERCHANGE PROTOCOL HEADER

   The Voice File Interchange Protocol header is organized as follows:

   2.1  The Header Version Number

      The version number is 1-byte.  This first version is number one.

   2.2  The Header Length

      The length is a 1-byte field indicating the length of the entire
      header in bytes.  For this first version, the length is
      18 (bytes).






Reynolds, et al.
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