Polycom ReadiVoice Reference Manual page 11

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If you want to provision the new options and features available in ReadiVoice
v. 2.5x.x., rewrite your legacy code to use only the current PSPI functions.
Each of the subsequent chapters is a PSPI reference for a specific version of the
ReadiVoice stored procedures. For your convenience, each chapter also
includes all the functions that are unchanged from earlier releases.
Once you determine which chapter meets your compatibility requirements,
you don't have to jump from chapter to chapter to find the reference
information you need. All the stored procedures appropriate for a specific
release level are in one chapter. See the table below for release levels.
If your code is for:
ReadiVoice v. 2.50.0 and later (including the
ReadiVoice-IP version)
ReadiVoice v. 2.32.0 and later (including the
ReadiVoice-IP version)
ReadiVoice v. 2.13.0 and later or v. 2.30.0 and later
(including the ReadiVoice-IP version)
ReadiVoice v. 2.10.0 and later or
ReadiVoice-IP v. 1.00.0 and later
ReadiVoice v. 2.00.0 and later
ConferenceNow! v. 1.30.0 and later
ConferenceNow! v. 1.20.0 and later
ConferenceNow! v. 1.10.0 and later
documents the return (error) codes returned by PSPI functions
Appendix A
and the database length defines.
Introduction to PSPI
See:
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
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