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-rw-r--r--pjmedia/include/pjmedia/stream.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/pjmedia/include/pjmedia/stream.h b/pjmedia/include/pjmedia/stream.h
index a2e5f207..d0594246 100644
--- a/pjmedia/include/pjmedia/stream.h
+++ b/pjmedia/include/pjmedia/stream.h
@@ -342,7 +342,8 @@ PJ_DECL(pj_status_t) pjmedia_stream_resume(pjmedia_stream *stream,
*
* @param stream The media stream.
* @param ascii_digit String containing digits to be sent to remote as
- * described on RFC 2833 section 3.10. Character 'R' is
+ * described on RFC 2833 section 3.10.
+ * If PJMEDIA_HAS_DTMF_FLASH is enabled, character 'R' is
* used to represent the event type 16 (flash) as stated
* in RFC 4730.
* Currently the maximum number of digits are 32.