ASN.1 BER, efficient binary encoding rules

The ASN.1 standard describes a notation for defining ASN.1 messages to be exchanged between heterogeneous systems, and a set of encoding rules in order to encode the application messages before transmitting. A set of encoding rules defined by the standard is ASN.1 BER (Basic Encoding Rules). Other encoding rules are PER (Packed Encoding Rules, aligned (PER) or unaligned (UPER)), DER (Distinguished Encoding Rules) and XER (XML Encoding Rules). The encoding of a message using ASN.1 BER results in binary data.

Processing of Call Data Records (CDR) is an important application domain for ASN.1 BER. CDRs are generated by network switches for services used by a customer of wireless or fixed communication networks. Roaming CDRs are generated in TAP3 files, an ASN.1 format defined by the GSM-Association. All these CDRs are then processed by billing systems.

MARBEN ASN.1 BER, an efficient, robust and reliable encoder/decoder

The Marben Products portfolio includes different products to create, encode, decode, visualize and convert ASN.1 BER data:

  • ASNSDK TCE-C, C++ and Java provides APIs for processing of ASN.1 BER data. These tools are optimized for performance and memory usage.
  • The ASN.1 Value Editor (ASN1 Viewer/ASN.1 Editor) is a graphical tool (GUI) to encode, decode, visualize and convert ASN.1 BER data. No application development is required to use it. It is generic and not restricted to any particular ASN.1 format. Large CDR and TAP3 files can easily be decoded and modified.
  • The CDR Converter can be used to convert ASN.1 BER data to XML or to CSV (Comma Separated Values). It is a command line tool and can easily be used for batch processing. All ASN.1 BER data for standardized or proprietary ASN.1 formats from network switches can be converted.
  • Marben Products offers also for free an online ASN.1 decoder to decode and convert ASN.1 BER data to XML. ASN.1 formats from 3GPP (RRC, NBAP, SABP, RANAP, RNSAP, S1AP, X2AP…) or ETSI are also available. The latest ASN.1 standard is supported by all tools.

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