(6c) RLT Directive - the user may request transmission of 

 sensor platform data acquired after the connection is 

 made until the user hangs up, by entering RLT after 

 the CDF informs him of the number of messages received 

 since the previous inquiry (or by entering RLT after 

 the ID entry, separated by a comma). Optionally, RLT, 

 DDDHHMMSS may be specified to receive data disseminated 

 earlier. As in paragraph (7b), page 26, a new time interval 

 may be specified to begin playback. Data disseminated 

 by this method are not recorded by the CDF, 



(7) Once transmission of the most recent sensor platform 

 data has been completed, (DIS only) then CDF sends the 

 following message: 



NNN MESSAGES DISSEMINATED. 



VERIFY: OK, NO, OR STOP. 



If the user enters OK, the GMT of the last message 

 disseminated will be inserted into the user queue 

 table as the "last time of dissemination." The 

 "number of messages" will be reset to zero, and the 

 message pointers updated. If the user enters NO, 

 then the user queue table will not be updated. 

 After either OK or NO, the CDF solicits a new request 

 with the following message: 



ENTER MSG, RLT, DIS, OR STOP. 



If at any time the user enters STOP, the CDF dis- 

 connects. If the user hangs up without answering 

 STOP, the CDF will assume that the previously 

 transmitted data were not successfully disseminated . 



(8) If the user disconnects the circuit at his/her end prior 

 to transmission of all his/her messages, then the CDF 

 considers that no message has been disseminated . 



(9) Data transmitted on these circuits have all erroneous 

 characters (containing parity errors replaced with a 

 dollar sign ($). 



- 29 



