modem goto data sequence

I'm looking at a run book for a bi-sync (can you believe 208 A/B?) process that 
has the operator dialing and going to data first and then answering a G to the 
dial now message despite what this CPA message says.

It seems that if you wait too long the remote modem will time out.  If you do a 
G first then the AS400 will begin trying to handshake.  If you make the go to 
data within the AS400's timeout value you should be ok.

Jerome Draper, Trilobyte Software Systems

 Message ID . . . . . . :   CPA5806       Severity . . . . . . . :   99        
 Message type . . . . . :   Inquiry                                            
 Date sent  . . . . . . :   08/11/03      Time sent  . . . . . . :   11:23:27  
                                                                               
 Message . . . . :   Manually dial nnnnnnnnnn for controller XXXCTL line 
XXXLIN.  
   (C G)                                                                       
 Cause . . . . . :   A job has been started that requires the use of a device  
   connected to a manual dial line.                                            
 Recovery  . . . :   If the connection needs to be made:                       
     1) Dial nnnnnnnnnn on line 
XXXLIN.                                           
     2) Wait for the remote modem or operator to answer.                       
     3) If necessary, place the modem in data mode (refer to the modem manual).
     4) Message CPF5908 will be sent to the system operator message queue      
   (QSYSOPR) or the configured message queue when the connection has been made.
 Possible choices for replying to message . . . . . . . . . . . . . . . :      
  C -- Cancel the connection attempt and inform any applications waiting for 
    the connection that it has been canceled.                                
  G -- Remove this message from the system operator message queue (QSYSOPR).