The code is also a part of the achemeris/mncc_cause_fixes_master branch.

-- 
Regards,
Alexander Chemeris.
CEO, Fairwaves, Inc.
https://fairwaves.co

Subscribe to Fairwaves news: http://eepurl.com/baL_pf
From e98086dad536f6415da387db5de32b1c146be9f2 Mon Sep 17 00:00:00 2001
From: Alexander Chemeris <[email protected]>
Date: Sat, 12 Sep 2015 20:20:44 -0400
Subject: [PATCH 2/3] mncc: Log CC cause when sending a primitive to MNCC.

---
 openbsc/src/libmsc/gsm_04_08.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/openbsc/src/libmsc/gsm_04_08.c b/openbsc/src/libmsc/gsm_04_08.c
index 435f0dc..01f1391 100644
--- a/openbsc/src/libmsc/gsm_04_08.c
+++ b/openbsc/src/libmsc/gsm_04_08.c
@@ -1346,20 +1346,26 @@ static int mncc_recvmsg(struct gsm_network *net, struct gsm_trans *trans,
 	if (trans)
 		if (trans->conn && trans->conn->lchan)
 			DEBUGP(DCC, "(bts %d trx %d ts %d ti %x sub %s) "
-				"Sending '%s' to MNCC.\n",
+				"Sending '%s' cause %s/%s to MNCC.\n",
 				trans->conn->lchan->ts->trx->bts->nr,
 				trans->conn->lchan->ts->trx->nr,
 				trans->conn->lchan->ts->nr, trans->transaction_id,
 				(trans->subscr)?(trans->subscr->extension):"-",
-				get_mncc_name(msg_type));
+				get_mncc_name(msg_type),
+				(mncc_has_cause(mncc))?get_mncc_location(mncc->cause.location):"-",
+				(mncc_has_cause(mncc))?get_mncc_cause(mncc->cause.value):"-");
 		else
 			DEBUGP(DCC, "(bts - trx - ts - ti -- sub %s) "
-				"Sending '%s' to MNCC.\n",
+				"Sending '%s' cause %s/%s to MNCC.\n",
 				(trans->subscr)?(trans->subscr->extension):"-",
-				get_mncc_name(msg_type));
+				get_mncc_name(msg_type),
+				(mncc_has_cause(mncc))?get_mncc_location(mncc->cause.location):"-",
+				(mncc_has_cause(mncc))?get_mncc_cause(mncc->cause.value):"-");
 	else
 		DEBUGP(DCC, "(bts - trx - ts - ti -- sub -) "
-			"Sending '%s' to MNCC.\n", get_mncc_name(msg_type));
+			"Sending '%s' cause %s/%s to MNCC.\n", get_mncc_name(msg_type),
+			   (mncc_has_cause(mncc))?get_mncc_location(mncc->cause.location):"-",
+			   (mncc_has_cause(mncc))?get_mncc_cause(mncc->cause.value):"-");
 
 	mncc->msg_type = msg_type;
 	
-- 
1.9.1

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