
172 DC 900-1340I
BSC Programmer’s Guide
Figure 6–3: Receive with Disabled Message Blocking Option
Figure 6–4: Receive with Data Blocking Option
Communications Line Client
Freeway
Message
Blocking =
disabled
Message
buffers
Receive
buffer
00
123
EOM
Block
00
00
TX
TX ETB
TX
TB
TX
1
3
2
100100100
DRWG-2442
2nd
Block
1st
Block
300
EOM
block
ClientCommunications Line Freeway
Message
Blocking =
data blocking
1024
4096
Message
buffers
Receive
buffer
TX
TX ETB
TX ETB
TX
1
3
2
100100100
DRWG-2443
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