No
3RD TRY?
Yes
C
Yes
RR
RESPONSE
REC?
Yes
No
C
A–48
Transmitting station
a
Transmit PPS-NULL
No
RESPONSE
REC?
Yes
PPR?
No
RNR?
No
MCF?
Yes
No
C
Fig. A-42 Transmitting Station Procedure 4
Yes
No
No
C
Transmit training
Transmit error
Transmit RCP
No
4TH PPR?
Yes
CONTINUE TO
CORRECT?
Yes
CTC
RESPONSE
REC?
Yes
frames