Envoy ACP/XF Application Programming Manual

Contents
EnvoyACP/XF Application Programming Manual–132179
vi
B. Features Common to Bit-Synchronous Protocols
B. Features Common to Bit-Synchronous Protocols
Message Formats B-1
Flag
B-1
Address Field
B-2
Control Field
B-2
Information Field
B-9
Frame-Check Sequence Field
B-9
U-Frame Commands
B-9
Mode-Setting Commands
B-10
Information Transfer Commands
B-10
Recovery Command (RSET)
B-11
Other U-Frame Command: XID
B-11
Nonreserved Commands
B-11
U-Frame Responses
B-12
Responses to Mode-Setting Commands and Status Requests
B-12
Unnumbered Information-Transfer (UI) Responses
B-13
Recovery Response (FRMR)
B-13
Other U-Frame Responses
B-13
Nonreserved Responses
B-14
Glossary
Index
Figures
Figure i. EnvoyACP/XF Manuals x
Figure 1-1.
Application-EnvoyACP/XF Relationship 1-2
Figure 1-2.
EnvoyACP/XF for V.25 bis Hardware and Software 1-13
Figure 1-3.
V.25 bis Frame Format 1-14
Figure 1-4.
Outgoing Call V.25 bis 1-19
Figure 1-5.
Incoming Call V.25 bis 1-19
Figure 1-6.
Interface Circuits for V.25 bis 1-21
Figure 2-1.
Station Addressing 2-2
Figure 2-2.
Disconnected Versus Offline States 2-4
Figure 2-3.
T1TIMER and RR Frame Retry Count 2-8
Figure 2-4.
Two Retry Count Variables 2-9
Figure 2-5.
Shutting Down the Link in ABM 2-12
Figure 3-1.
T1TIMER and RR Frame Retry Count 3-8
Figure 3-2.
Retry Count Variables 3-9
Figure 3-3.
Standard NRM Link Establishment 3-14