#------------------------------------------------------------------------------ # $File: ber,v 1.1 2016/06/05 00:21:30 christos Exp $ # ber: file(1) magic for several BER formats used in the mobile # telecommunications industry (Georg Sauthoff) # The file formats are standardized by the GSMA (GSM association). # They are specified via ASN.1 schemas and some prose. Basic encoding # rules (BER) is the used encoding. The formats are used for exchanging # call data records (CDRs) between mobile operators and associated # parties for roaming clearing purposes and fraud detection. # The magic file covers: # - TAP files (TD.57) - CDR batches and notifications # - RAP files (TD.32) - return batches and acknowledgements # - NRT files (TD.35) - CDR batches for 'near real time' processing # # TAP 3 Files # TAP -> Transferred Account Procedure # cf. http://www.gsma.com/newsroom/wp-content/uploads/TD.57-v32.31.pdf # TransferBatch short tag 0 byte 0x61 # BatchControlInfo short tag >&1 search/b5 \x64 # Sender long tag #TAP 3.x (BER encoded) >>&1 search/b8 \x5f\x81\x44 # <SpecificationVersionNumber>3</><ReleaseVersionNumber> block >>>&64 search/b64 \x5f\x81\x49\x01\x03\x5f\x81\x3d\x01 >>>>&0 byte x TAP 3.%d Batch (TD.57, Transferred Account) # Notification short tag 0 byte 0x62 # Sender long tag >2 search/b8 \x5f\x81\x44 # <SpecificationVersionNumber>3</><ReleaseVersionNumber> block >>&64 search/b64 \x5f\x81\x49\x01\x03\x5f\x81\x3d\x01 >>>&0 byte x TAP 3.%d Notification (TD.57, Transferred Account) # NRT Files # NRT a.k.a. NRTRDE 0 byte 0x61 # <SpecificationVersionNumber>2</><ReleaseVersionNumber> block >&1 search/b8 \x5f\x29\x01\x02\x5f\x25\x01 >>&0 byte x NRT 2.%d (TD.35, Near Real Time Roaming Data Exchange) # RAP Files # cf. http://www.gsma.com/newsroom/wp-content/uploads/TD.32-v6.11.pdf # Long ReturnBatch tag 0 string \x7f\x84\x16 # Long RapBatchControlInfo tag >&1 search/b8 \x7f\x84\x19 # <SpecificationVersionNumber>3</><ReleaseVersionNumber> block >>&64 search/b64 \x5f\x81\x49\x01\x03\x5f\x81\x3d\x01 # <RapSpecificationVersionNumber>1</><RapReleaseVersionNumber> block >>>&1 string/b \x5f\x84\x20\x01\x01\x5f\x84\x1f\x01 >>>>&0 byte x RAP 1.%d Batch (TD.32, Returned Account Procedure), >>>&0 byte x TAP 3.%d # Long Acknowledgement tag 0 string \x7f\x84\x17 # Long Sender tag >&1 search/b5 \x5f\x81\x44 RAP Acknowledgement (TD.32, Returned Account Procedure)