Bit-sequence independence

In telecommunication, a bit-sequence independence is a characteristic of some digital data transmission systems that impose no restrictions on, or modification of, the transmitted bit sequence.

Note: Bit-sequence-independent protocols are in contrast to protocols that reserve certain bit sequences for special meanings, such as the flag sequence, 01111110, for HDLC, SDLC, and ADCCP protocols.

Source: from Federal Standard 1037C