Exchange/RJE Manual

Transmission Delay (Transmitter-Initiated)
BSC Line Control
104698 Tandem Computers Incorporated C–13
Transmission Delay
(Transmitter-Initiated)
This figure shows the BSC line-control sequence between two stations during a
transmission where the transmitting station initiates a transmission delay.
009
Transmitting Station Receiving Station
ENQ
bid for line
STX
text (odd)
ETB
STX
text (even)
ETB
ACK 0
ACK 1
ACK 0
NAK
EOT
ACK 1
NAK
(two-second time
interval elapses)
TTD
(two-second time
interval elapses)
TTD
NAK
(two-second time
interval elapses)
TTD
STX
text (even)
ETX