BIP-8 is an abbreviation for bit-interleaved parity 8. BIP-8 consists of a parity

Parity

Parity may refer to:* Parity , a symmetry property of physical quantities or processes under spatial inversion* Parity , indicates whether a number is even or odd...

 byte

Byte

The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer...

 calculated bit-wise across a large number of bytes in a transmission transport frame. BIP-8 bits are set such that the overall data stream, including the BIP-8 byte, has even parity. BIP-8 is used in the SONET

Sonet

Sonet may refer to:* Sonet Records, European record label* Synchronous optical networking * Saab Sonett...

 and Optical Transport Network

Optical Transport Network

ITU-T defines an Optical Transport Network as a set of Optical Network Elements connected by optical fibre links, able to provide functionality of transport, multiplexing, switching, management, supervision and survivability of optical channels carrying client signals...

 standards, as well as in some older PDH

Plesiochronous Digital Hierarchy

The Plesiochronous Digital Hierarchy is a technology used in telecommunications networks to transport large quantities of data over digital transport equipment such as fibre optic and microwave radio systems...

 framing schemes such as DS3

Digital Signal 3

A Digital Signal 3 is a digital signal level 3 T-carrier. It may also be referred to as a T3 line.*The data rate for this type of signal is 44.736 Mbit/s.*This level of carrier can transport 28 DS1 level signals within its payload....

 and E3

E-carrier

In digital telecommunications, where a single physical wire pair can be used to carry many simultaneous voice conversations by time-division multiplexing, worldwide standards have been created and deployed...

.

BIP-8 has no error-correcting functionality: like the CRC-6 bits in the much older extended superframe

Extended superframe

In telecommunication, an Extended Super Frame is a T1 framing standard, sometimes called D5 framing because it was first used in the D5 Channel Bank, invented in the 1980s...

format, it merely provides an approximate method for monitoring link quality at the bit error level.