¿Por qué se prefiere utilizar el relleno de bytes con PPP?

Question

Leí que PPP puede usar relleno de bytes y bits, pero no se me ocurre ninguna razón por la que se prefiera el relleno de bytes. ¿Puede?

Answer 1

copiado de algún libro de texto

PPP was clearly designed to be implemented in software, not in hardware as
HDLC nearly always is. With a software implementation, working entirely
with bytes is much simpler than working with individual bits. In addition,
PPP was designed to be used with modems, and modems accept and transmit
data in units of 1 byte, not 1 bit.