mirror of https://gerrit.osmocom.org/asn1c
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README
GENERAL INFORMATION =================== The GSM TAP3 (Transferred Account Procedure, Version 3) decoder. Invoking `make` will compile the ASN.1 specifications from the ../tap3.asn1 file. THERE IS NO tap3.asn1 FILE THERE YET! OBTAINING THE TAP3 SPECIFICATION ================================ To obtain the TAP3 ASN.1 specification, you should go to http://www.gsmworld.com/using/billing/tap3_legal.html and agree with their licensing terms by clicking the "I ACCEPT" button. A .ZIP file with several Microsoft Word .DOC files will download shortly. You should extract the TAP-0311 ASN.1 module from one of these .DOC files and save it as the ../tap3.asn1 file. The ../tap3.asn1 file should start with the following line "TAP-0311 DEFINITIONS IMPLICIT TAGS ::=" and end with the "END" token. Be careful not to copy any non-ASN.1 preambles from that .DOC file. After obtaining the tap3.asn1, type `make` in the directory containing this README file. tap3dump USAGE ============== The tap3dump utility may be used to dump the contents of the BER-encoded TAP3 data record file: ./tap3dump -x tapfile.der # Print as XML (BASIC-XER) If necessary, a straightforward modification of the ../../skeletons/asn-decoder-template.c will allow you to build a converter from the XML (XER) TAP3 format back into binary (BER). The full list of recognized command line options may be obtained with > ./tap3dump -h Usage: ./tap3dump [options] <data.ber> ... Where options are: -b <size> Set the i/o buffer size (default is 8192) -c Check ASN.1 constraints after decoding -d Enable debugging (-dd is even better) -n <num> Process files <num> times -s <size> Set the stack usage limit -p Print out the decoded contents -x Print out as XML