Basic Encoding Rules
BER was created in the early 1980s and is used in a wide range of applications, such as Simple Network Management Protocol ( SNMP ) for management of the Internet; Message Handling Services ( MHS ) for exchange of electronic mail and TSAPI for control of telephone/computer interactions.
It is also used to describe how to represent or encode values of each ASN.1 type as a string of eight-bit octects.
There is generally more than one way to BER-encode a given value.
It is defined in X.209.