Discussion:
ITU-T TCAP protocol, Application Context Name
Soi Hon Lo
2005-02-02 16:42:28 UTC
Permalink
Hello,

The ethereal is a very good tool. It helps me a lot in my work.

I found a thing in the ITU-T TCAP decoding part. When decoding GSM MAP messages, the Application Context Name in the TCAP protocol is not decoded.

For example, the Application Context Name decoded by ethereal is:
Application Context Name Tag: 0xa1
Length: 0x09
OID: 0.4.0.0.1.0.5.3

It would be good if the OID (Object Identity) could be decoded to
locationInfoRetrievalContext-v3
or
ccitt (0) identified-organization (4) etsi (0) mobileDomain (0)
mobileDomainDefinitions (0) version1 (1)
locInfoRetrieval(5) version3(3)

Thanks,

Wally Lo



Clause "ASN.1 Module for application-context-names" in 3GPP TS 29.002

IMPORTS
gsm-NetworkId,
ac-Id
FROM MobileDomainDefinitions {
itu-t (0) identified-organization (4) etsi (0) mobileDomain (0)
mobileDomainDefinitions (0) version1 (1)}
;
map-ac OBJECT IDENTIFIER ::= {gsm-NetworkId ac-Id}
locationInfoRetrievalContext-v3 OBJECT IDENTIFIER ::=
{map-ac locInfoRetrieval(5) version3(3)}




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Anders Broman (AL/EAB)
2005-02-03 09:00:35 UTC
Permalink
Hi,
Some OID:s are translated in the SVN version of Ethereal e.g will be available at the next release, you can try out the most recent build at:
http://www.ethereal.com/distribution/buildbot-builds/ <http://www.ethereal.com/distribution/buildbot-builds/ethereal-setup-0.10.9-SVN-13255.exe> ethereal-setup-0.10.9-SVN-13255.exe

The following OID:s are translated, if you know of any more OID:s can you please add them to the list and send it back to me for inclusion in Ethereal,
if you have any traces to send to me privately I'd apreciate it as im working on improving the GSM MAP dissection an need sample captures to veryfy
the code.
Best regards
Anders

register_ber_oid_name("0.4.0.0.1.0.1.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) networkLocUp(1) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.2.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) locationCancel(2) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.2.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) locationCancel(2) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.3.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) roamingNbEnquiry(3) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.3.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) roamingNbEnquiry(3) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.5.3","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) locInfoRetrieval(5) version3(3)" );
register_ber_oid_name("0.4.0.0.1.0.5.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) locInfoRetrieval(5) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.5.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) locInfoRetrieval(5) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.10.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) reset(10) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.10.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) reset(10) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.11.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) handoverControl(11) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.11.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) handoverControl(11) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.26.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) imsiRetrieval(26) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.13.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) equipmentMngt(13) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.13.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) equipmentMngt(13) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.14.3","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) infoRetrieval(14) version3(3)" );
register_ber_oid_name("0.4.0.0.1.0.14.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) infoRetrieval(14) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.14.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) infoRetrieval(14) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.15.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) interVlrInfoRetrieval(15) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.16.3","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) subscriberDataMngt(16) version3(3)" );
register_ber_oid_name("0.4.0.0.1.0.16.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) subscriberDataMngt(16) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.16.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) subscriberDataMngt(16) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.17.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) tracing(17) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.17.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) tracing(17) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.18.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) networkFunctionalSs(18) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.18.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) networkFunctionalSs(18) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.19.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) networkUnstructuredSs(19) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.20.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) shortMsgGateway(20) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.20.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) shortMsgGateway(20) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.21.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) shortMsgMO-Relay(21) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.21.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) --shortMsgRelay--21 version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.23.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) shortMsgAlert(23) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.23.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) shortMsgAlert(23) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.24.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) mwdMngt(24) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.24.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) mwdMngt(24) version1(1)" );
register_ber_oid_name("0.4.0.0.1.0.25.2","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) shortMsgMT-Relay(25) version2(2)" );
register_ber_oid_name("0.4.0.0.1.0.25.1","itu-t(0) identified-organization(4) etsi(0) mobileDomain(0) gsm-Network(1) map-ac(0) msPurging(27) version2(2)" );


-----Original Message-----
From: ethereal-users-***@ethereal.com [mailto:ethereal-users-***@ethereal.com]On Behalf Of Soi Hon Lo
Sent: den 2 februari 2005 17:42
To: ethereal-***@ethereal.com
Subject: [Ethereal-users] ITU-T TCAP protocol, Application Context Name


Hello,

The ethereal is a very good tool. It helps me a lot in my work.

I found a thing in the ITU-T TCAP decoding part. When decoding GSM MAP messages, the Application Context Name in the TCAP protocol is not decoded.

For example, the Application Context Name decoded by ethereal is:
Application Context Name Tag: 0xa1
Length: 0x09
OID: 0.4.0.0.1.0.5.3

It would be good if the OID (Object Identity) could be decoded to
locationInfoRetrievalContext-v3
or
ccitt (0) identified-organization (4) etsi (0) mobileDomain (0)
mobileDomainDefinitions (0) version1 (1)
locInfoRetrieval(5) version3(3)

Thanks,

Wally Lo



Clause "ASN.1 Module for application-context-names" in 3GPP TS 29.002

IMPORTS
gsm-NetworkId,
ac-Id
FROM MobileDomainDefinitions {
itu-t (0) identified-organization (4) etsi (0) mobileDomain (0)
mobileDomainDefinitions (0) version1 (1)}
;
map-ac OBJECT IDENTIFIER ::= {gsm-NetworkId ac-Id}
locationInfoRetrievalContext-v3 OBJECT IDENTIFIER ::=
{map-ac locInfoRetrieval(5) version3(3)}





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