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gsup: fix wrong placement of Cause IE

GSUP protocol specification mandates specific IE ordering;  however
some message definitions are out of sync with the IE order produced
by libosmocore's GSUP encoder.

Change-Id: I5caa3101da310cddfa311d068ad889bca697b438
Fixes: 54343caa ("common/gsup.adoc: document Supplementary Services extension")
Fixes: ce32ec2a ("gsup: Document ePDG Tunnel Req/Res/Err")
---
M common/chapters/gsup.adoc
1 file changed, 2 insertions(+), 2 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-gsm-manuals refs/changes/66/38666/1

diff --git a/common/chapters/gsup.adoc b/common/chapters/gsup.adoc
index f5cce14..b049330 100644
--- a/common/chapters/gsup.adoc
+++ b/common/chapters/gsup.adoc
@@ -643,9 +643,9 @@
 |IEI|IE|Type|Presence|Format|Length
 |  |Message Type|<<gsup-ie-msgtype>>|M|V|1
 |01|IMSI|<<gsup-ie-imsi>>|M|TLV|2-10
+|02|Cause|<<gsup-ie-cause>>|M|TLV|3
 |30|Session ID|<<gsup-ie-session-id>>|M|TLV|6
 |31|Session State|<<gsup-ie-session-state>>|M|TLV|3
-|02|Cause|<<gsup-ie-cause>>|M|TLV|3
 |===
 
 [[gsup-msg-proc-supl-serv-res]]
@@ -1114,8 +1114,8 @@
 |IEI|IE|Type|Presence|Format|Length
 |  |Message Type|<<gsup-ie-msgtype>>|M|V|1
 |01|IMSI|<<gsup-ie-imsi>>|M|TLV|2-10
-|0a|Message Class|<<gsup-ie-message-class>>|M|TLV|3
 |02|Cause|<<gsup-ie-cause>>|M|TLV|3
+|0a|Message Class|<<gsup-ie-message-class>>|M|TLV|3
 |===
 
 [[gsup-msg-epdg-tunnel-res]]

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