diff --git a/gatchat/gatutil.c b/gatchat/gatutil.c
index 575019d6..1306c616 100644
--- a/gatchat/gatutil.c
+++ b/gatchat/gatutil.c
@@ -109,6 +109,29 @@ void g_at_util_debug_chat(gboolean in, const char *str, gsize len,
 	g_free(escaped_str);
 }
 
+void g_at_util_debug_dump(gboolean in, const unsigned char *buf, gsize len,
+				GAtDebugFunc debugf, gpointer user_data)
+{
+	char type = in ? '<' : '>';
+	GString *str;
+	gsize i;
+
+	if (!debugf || !len)
+		return;
+
+	str = g_string_sized_new(1 + (len * 2));
+	if (!str)
+		return;
+
+	g_string_append_c(str, type);
+
+	for (i = 0; i < len; i++)
+		g_string_append_printf(str, " %02x", buf[i]);
+
+	debugf(str->str, user_data);
+	g_string_free(str, TRUE);
+}
+
 gboolean g_at_util_setup_io(GIOChannel *io, GIOFlags flags)
 {
 	GIOFlags io_flags;
diff --git a/gatchat/gatutil.h b/gatchat/gatutil.h
index 993db457..1a065af2 100644
--- a/gatchat/gatutil.h
+++ b/gatchat/gatutil.h
@@ -22,15 +22,18 @@
 #ifndef __GATUTIL_H
 #define __GATUTIL_H
 
+#include "gat.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#include "gat.h"
-
 void g_at_util_debug_chat(gboolean in, const char *str, gsize len,
 				GAtDebugFunc debugf, gpointer user_data);
 
+void g_at_util_debug_dump(gboolean in, const unsigned char *buf, gsize len,
+				GAtDebugFunc debugf, gpointer user_data);
+
 gboolean g_at_util_setup_io(GIOChannel *io, GIOFlags flags);
 
 #ifdef __cplusplus