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-rw-r--r--include/osmocom/gsm/protocol/gsm_03_40.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/osmocom/gsm/protocol/gsm_03_40.h b/include/osmocom/gsm/protocol/gsm_03_40.h
index a65203f9..33a5c598 100644
--- a/include/osmocom/gsm/protocol/gsm_03_40.h
+++ b/include/osmocom/gsm/protocol/gsm_03_40.h
@@ -3,6 +3,11 @@
#pragma once
+/* SM-TP-UD (User-Data) field may contain up to 140 octets
+ * (or 140 * 8 / 7 = 160 septets). See section 9.2.3.24. */
+#define GSM340_UDL_OCT_MAX 140 /*!< Maximum TP-UD length (in octets) for 7-bit encoding */
+#define GSM340_UDL_SPT_MAX 160 /*!< Maximum TP-UD length (in seplets) for 8-bit and UCS-2 encoding */
+
/**
* 9.1.2.5 Type Of Number
*/