Envoy Application Programming Manual

Contents
Envoy Application Programming Manual—427159-001
iii
3. BISYNC Point-To-Point Protocol (continued)
3. BISYNC Point-To-Point Protocol (continued)
Limited Conversational Mode 3-7
Multileaving Conversational Mode
3-7
Circuit Assurance Mode (ID Exchange)
3-7
File-System Procedures
3-8
Message Formats
3-11
Normal Text
3-12
Transparent Text
3-12
Headings
3-13
Intermediate Text Blocking
3-13
ID Exchange
3-15
BCC Calculation
3-15
File-System Errors
3-16
Line Action by Procedure Call
3-17
READ Procedure
3-17
WRITE Procedure
3-22
WRITEREAD Procedure (Limited Conversational Exchange)
3-25
CONTROL Procedure (Send EOT)
3-31
CONTROL Procedure (Send WACK)
3-31
CONTROL Procedure (Enable RVI)
3-31
CONTROL Procedure (Send TTD)
3-32
Line-Error Handling
3-32
Initial READ Operation
3-32
Continuation READ Operation
3-35
Initial WRITE Operation
3-37
Continuation WRITE Operation
3-39
WRITEREAD Operation
3-41
Programming Examples
3-42
Line Bid
3-42
Limited Conversational Mode
3-49
Use of Reverse Interrupt (RVI)
3-53
ID Exchange
3-55