1 files changed, 2 insertions, 0 deletions
diff --git a/src/modem.h b/src/modem.h
index 09823a5..2598273 100644
--- a/src/modem.h
+++ b/src/modem.h
@@ -9,6 +9,7 @@
 #include <poll.h>
 #include <string.h>
 #include <signal.h>
+#include <errno.h>
 
 #define _AT "AT\r\n"
 #define _AT_ANSWER "ATA\r\n"
@@ -17,6 +18,7 @@
 #define _AT_HANGUP "ATH\r\n"
 #define _AT_CMD_MODE "+++\r\n"
 #define _AT_MUTE "ATM0\r\n"
+#define _AT_RESET_ON_DTR "AT&D3\r\n"
 
 int modem_accept_wait(int fd);