sms - Modify ASN.1 BER encoded CDR file -

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i processing cdrs (call detailed record). dont know file is? supposed 'asn.1' format ber encoded files. problem want modify data in files dont know editor or decorder can use modify files. searched lot , found many asn.1 decorder asn.1 bsr viewer/editor no 1 allows want perform.

this cdr supposed contain customer detail, phone number, telecom services(telephony, sms, mms) etc.

one of cdr name - ggsn01_20120105000102_56641-09-12-01-09%3a30 , file type - file

no other information available. when opening file in text editor show rectangles , text data.

any telecom guy can definite me. new telecom domain.

please ask if need more information. thanks

you need know asn.1 , ber able correctly edit file. ber binary format, not ascii text, see in text editor. modifying embedded plain text safe if not changing length of string; ber uses nested structures encode lengths , change in length of string value requires adjustments encoded lengths of enclosing structures. additionally, in order know data is, need know asn.1 describes (defines types describe encoded data).

you use tool such asn.1 editor, without requisite background knowledge, think not helpful you. can follow various links on this resources page more information asn.1. (full disclosure: obj-sys employee).


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