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Application context name

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Maddy
Application context name

HI All,
What is Application Context Name in ss7 MAp ?

Thanks

Maddy

Edited by: admin on 05/16/2010 - 04:32
pramod
Re: Application context name

Hi Maddy
Application Context comes under dialogue portion of TCAP msg
Where it specifies about the msg Version and type .

dineshonss7
Re: Application context name

Its 8 byte value used to negotiate the service capabality and version supported between MAP users.

First 6 byte will be almost fixed for all MAP operation code.

0.4.0.0.1.0 

Last two byte differs according to MAP operation code and version supported by MAP layer.
Sixth byte takes value defined in MAP spec according to operation code which MAP user wants to negotiate with peer.
Seventh byte contains version supported for that message (operation code).
byte 6 18  Network Functional
byte 7   2  version 2

2maeguil
Re: Application context name

hi,
im tracing an InitialDP message of CS1. the context name on the TCAP layer has the following values:

2a
86
3a
00
89
61
33
01
01
01
00
01

What is the meaning of those bytes? I understand the meaning of the context name in a MAP message (the one "dineshonss" had post before), but i cant found the meaning of it for CS1 messages in any document. ?Could any one help me please?

Thanks a lot in advance

tulip
Re: Application context name

Hi I would be of great help if some one clarifies this.

Lets say ACN is decoded as

.... shortMsgMT-Relay (25) version3 (3)
so what does it suggest.
which MAP version must be used.
Is it version 3 or some thing else.if its some thing else how does Application Context Name Mapping is done to MAP version to be used.

alaa.alatrash
Re: Application context name

Hi,

The very Important Values in the Application Context are the last two bytes "Kindly note that it is not always 8 bytes, Refer to SINAP".
the last two bytes are the Application Context and the Application Version

now for the version, it defines the protocol version where it is zero based:
0 Version 1
1 Version 2

and for the context, you should know that each context is a combination of local operations that operates with each other to accomplish a context goal.

so if you are trying to send a message with local operation not listed in the used application context and version, you will get an error in return.

--
Best Regards
[email protected]

--Best RegardsAlaa' Al Atrash[email protected]

ved
Re: Application context name

A very good place to decode application-context is OID Repository

http://www.oid-info.com/

For example, Assume that your application context is 0.4.0.0.1.0.50.1, have a look at below two links which shows the decoding of this application context

http://www.oid-info.com/get/0.4.0.0.1.0.50.1
http://www.oid-info.com/cgi-bin/display?tree=0.4.0.0.1.0.50

~Ved