Exchange/RJE Manual

Transmission Delay (Receiver-Initiated)
BSC Line Control
C–12 104698 Tandem Computers Incorporated
Transmission Delay
(Receiver-Initiated)
This figure shows the BSC line-control sequence between two stations during a
transmission where the receiving station initiates a transmission delay.
008
Transmitting Station Receiving Station
ENQ
bid for line
STX
text (odd)
ETB
STX
text (even)
ETB
STX
text (odd)
ETB
ENQ
ACK 0
ACK 1
ACK 0
WACK
(two-second time
interval elapses)
(two-second time
interval elapses)
WACK
ENQ
ACK 1
STX
text (even)
ETB
STX
text (odd)
ETX
ACK 0
EOT
ACK 1