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-rw-r--r--include/asterisk/channel.h12
1 files changed, 10 insertions, 2 deletions
diff --git a/include/asterisk/channel.h b/include/asterisk/channel.h
index 6b864ecf8..2e9a79bff 100644
--- a/include/asterisk/channel.h
+++ b/include/asterisk/channel.h
@@ -251,10 +251,18 @@ struct ast_channel_tech {
int (* const devicestate)(void *data); /*!< Devicestate call back */
- /*! \brief Start sending a literal DTMF digit */
+ /*!
+ * \brief Start sending a literal DTMF digit
+ *
+ * \note The channel is not locked when this function gets called.
+ */
int (* const send_digit_begin)(struct ast_channel *chan, char digit);
- /*! \brief Stop sending a literal DTMF digit */
+ /*!
+ * \brief Stop sending a literal DTMF digit
+ *
+ * \note The channel is not locked when this function gets called.
+ */
int (* const send_digit_end)(struct ast_channel *chan, char digit, unsigned int duration);
/*! \brief Call a given phone number (address, etc), but don't