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-rw-r--r--apps/app_echo.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/apps/app_echo.c b/apps/app_echo.c
index a8a7fd84d..df5a914f1 100644
--- a/apps/app_echo.c
+++ b/apps/app_echo.c
@@ -40,12 +40,13 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
/*** DOCUMENTATION
<application name="Echo" language="en_US">
<synopsis>
- Echo audio, video, DTMF back to the calling party
+ Echo media, DTMF back to the calling party
</synopsis>
<syntax />
<description>
- <para>Echos back any audio, video or DTMF frames read from the calling
- channel back to itself. Note: If '#' detected application exits</para>
+ <para>Echos back any media or DTMF frames read from the calling
+ channel back to itself. This will not echo CONTROL, MODEM, or NULL
+ frames. Note: If '#' detected application exits.</para>
<para>This application does not automatically answer and should be
preceeded by an application such as Answer() or Progress().</para>
</description>
@@ -70,7 +71,10 @@ static int echo_exec(struct ast_channel *chan, const char *data)
}
f->delivery.tv_sec = 0;
f->delivery.tv_usec = 0;
- if (ast_write(chan, f)) {
+ if (f->frametype != AST_FRAME_CONTROL
+ && f->frametype != AST_FRAME_MODEM
+ && f->frametype != AST_FRAME_NULL
+ && ast_write(chan, f)) {
ast_frfree(f);
goto end;
}