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Harald Welte laforge at gnumonks.orgHi Anak Galer,
On Mon, Sep 17, 2012 at 04:31:22AM +0700, anak galer wrote:
> I want asking about protocol GSM header like this.
> ex :
>
> /* A-bis Interface Management Messages */
> NM_MT_ESTABLISH_TEI = 0x21,
>
> where it came from 0x21, explain please.
> anyone have more reference
You found that value in the following file:
libosmocore/include/osmocom/gsm/protocol/gsm_12_21.h
If you read the beginning of the file, it states:
/* GSM Network Management messages on the A-bis interface
* 3GPP TS 12.21 version 8.0.0 Release 1999 / ETSI TS 100 623 V8.0.0 */
This is the exact specification number and specification version that
the value was taken from. You can obtain the specification free of
charge from both ETSI and 3GPP.
Regards,
Harald
--
- Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/
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