6100 BSC Programming Manual

6100 BSC Concepts and Context
S5066-015
PAD SYN...SYN STX TEXT
ETB
BCC PAD
PAD SYN...SYN ENQ
PAD
PAD SYN...SYN
NAK
PAD
PAD SYN...SYN
NAK
PAD
Application-Supplied BSC-Supplied
PAD SYN...SYN ID ENQ PAD
PAD
SYN...SYN
NAK
PAD
PAD SYN...SYN STX TEXPAD SYN...SYN STX ENQ
PAD
PAD SYN...SYN NAK PAD
PAD
SYN...SYN
ID
ENQ
PAD
Line Bid
Data Transfer
Station Not Ready
BCC Error
Data Transfer
Circuit Assurance
TTD
Data Transfer Resumes
Error in ID
Figure 1-15. Uses of NAK
1-33