Fix RANAP SSN: it's 142, not 143
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Message ID 1460562325-21728-1-git-send-email-nhofmeyr@sysmocom.de
State Not Applicable
Headers show

Commit Message

Neels Hofmeyr April 13, 2016, 3:45 p.m. UTC
143 is actually the SSN for RNSAP. Wireshark displayed a RNSAP message type
and malformed packet warning until I fixed this to 142. Now I get the proper
RANAP and id-Paging reported.

There has been a reallocation for RANAP and RNSAP SSNs, though the old SSN for
RANAP is apparently 32 (seen in a pcap from a real 3G network). When I send 32
instead of 142, wireshark also decodes the message as valid RANAP.
---
 include/osmocom/sigtran/sccp_sap.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Harald Welte April 16, 2016, 11:29 a.m. UTC | #1
On Wed, Apr 13, 2016 at 05:45:25PM +0200, Neels Hofmeyr wrote:
> 143 is actually the SSN for RNSAP.

thanks, fixed. Also added some more SSN definitions as my own patch on
top.

Patch
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diff --git a/include/osmocom/sigtran/sccp_sap.h b/include/osmocom/sigtran/sccp_sap.h
index 5696b47..15aa840 100644
--- a/include/osmocom/sigtran/sccp_sap.h
+++ b/include/osmocom/sigtran/sccp_sap.h
@@ -106,7 +106,7 @@  enum osmo_sccp_ssn {
 	OSMO_SCCP_SSN_RES_INTL		= 0x0c,
 	OSMO_SCCP_SSN_BISDN		= 0x0d,
 	OSMO_SCCP_SSN_TC_TEST		= 0x0e,
-	OSMO_SCCP_SSN_RANAP		= 143,
+	OSMO_SCCP_SSN_RANAP		= 142,
 };
 
 struct osmo_sccp_gt {