Exchange/RJE Manual

User-Exit Procedure
Example Programs
104698 Tandem Computers Incorporated D–21
Errors in the range 450 through 510 and greater than 1000 are considered retryable and
the command interpreter retries the dialing operation a maximum of five times with a
delay of ten seconds between two retries. If the error persists at the end of five retries,
the CONNECT operation is aborted. If you want to delay longer than ten seconds
between retries for a specific error, you can code your user exit procedure to delay
before returning. For example, if a busy signal is detected, you probably want to delay
for more than ten seconds before trying again.
Errors in the range 350 through 449 are considered non-retryable and the command
interpreter aborts the operation upon receiving errors in this range.
For errors outside the range recommended for user-exit procedures, the recovery
action is as follows. Error 140 (modem error) is retryable and the dialing operation is
retried a maximum of five times with a delay of ten seconds between two retries. All
other errors are not retried and the dialing operation is aborted.
For more information on handling errors, see the appropriate manual for your I/O
process (CP6100 BSC Programming Manual or Envoy Byte-Oriented Protocols Reference
Manual).