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Using Prompt Files
November 2009 59
2. Dial the phone number of the channel you selected. Make sure the
phone line is attached to the selected channel.
The voice.c program does not indicate when to begin recording.
Begin recording when the line goes off-hook (when you no longer
hear ringing).
Playing Back the Voice Message
¾
Request that a channel (0 in the example) play back your
previously recorded message stored in voice.ips.
1. At the system prompt, type:
voice -u 0 -p voice.ips
2. Dial the phone number of the channel. You should hear your
recorded message.
Using Prompt Files
Prompt files are infopkt files that contain many individual speech
phrases in a single file. Each phrase is a partial or complete prompt
in infopkt format followed by an INFOPKT_END_OF_SPEECH infopkt
with mode value 1. The prompt file starts with an
INFOPKT_PROMPT_MAP infopkt, which contains file offsets to each
individual phrase.
The Bfv API contains functions that open and close a Brooktrout
prompt file and play individual phrases stored in it. For example,
after an application opens a Brooktrout prompt file, it can call the
BfvPromptPlay function to play any individual phrase, or it can
call the BfvPromptPlay function multiple times to concatenate
phrases and create a complete prompt.
Using Brooktrout prompt files provides two advantages. Since all of
the prompts are stored in a single file, tracking and maintaining
prompts is easier. And because you can combine phrases to create
complete prompts, you can reduce the amount of disk space needed
for overall speech storage.