CHAPTER 6: V.25 bis Autodialer
6.5.3 S
, B
-O
YNCHRONOUS
IT
RIENTED
||FLAG|ADDR|CTRL|MESSAGE|FCS|FLAG|
Consecutive 8-bit data units are
used within the message and
submitted to the HDLC framing
(zero insertion). The 8-bit data
units are formed by a 7-bit IA5
character and an off parity bit.
137