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-rw-r--r--include/osmocom/gsm/gsm48.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/osmocom/gsm/gsm48.h b/include/osmocom/gsm/gsm48.h
index 151b14e..a4522d7 100644
--- a/include/osmocom/gsm/gsm48.h
+++ b/include/osmocom/gsm/gsm48.h
@@ -4,6 +4,9 @@
#include <osmocom/gsm/protocol/gsm_04_08.h>
#include <osmocom/gsm/gsm48_ie.h>
+/* reserved according to GSM 03.03 ยง 2.4 */
+#define GSM_RESERVED_TMSI 0xFFFFFFFF
+
/* A parsed GPRS routing area */
struct gprs_ra_id {
uint16_t mnc;