+#ifdef MSG_USE_DEPRECATED
+/* \brief MSG_mailbox_get_by_channel - get a mailbox of the specified host from its channel.
+ *
+ * The function MSG_mailbox_get_by_channel returns the mailbox of the
+ * specified host from the channel specified by the parameter
+ * channel. If the mailbox does not exists, the function fails.
+ *
+ * \param host The host containing he mailbox to get.
+ * \param channel The channel used to identify the mailbox.
+ *
+ * \return The mailbox of the specified host associated the channel
+ * specified as parameter.
+ *
+ */
+XBT_PUBLIC(msg_mailbox_t)
+ MSG_mailbox_get_by_channel(msg_host_t host, m_channel_t channel);
+#endif