_ ______________________________________________________________________________________
_ ______________________________________________________________________________________
_ ______________________________________________________________________________________
data frames are multiplexed into a DCP and DS1 frame.
The state of the status bit along with its transition from one frame to another frame is used to convey the
state of the following RS-449/V.35 signal leads:
Request to Send
Clear to Send
Send Data
Receiver Ready
Receive Data
DATA mode 1
DCP
F
DS1/DMI/BOS
F
Figure D-3. Data mode 1 With DCP and DS1/DMI/BOS Frame Multiplexing Arrangements
(transmit)
(transmit)
(transmit)
(receive)
(receive)
CONTROL
S
I1
I1
I2
F
. . .
CHANNEL 1
24
COMMUNICATIONS PROTOCOLS
DATA
S
DATA
I1
. . .
I1
I2
. . .
. . .
F
1
D-13
S
. . .
I1
I1
I2
. . .
F
1