PROBLEM: Second Scheduled Event or Group Download using Modem fails

Article ID: 020207sab
Last Reviewed: July 10, 2023

The information in this article applies to:


Any of the following:

  • A second scheduled event that connects to a Logger using a modem fails.
  • A second Download in a Group Download using a modem fails.


The default time that Pronto for Windows allows between hanging up the modem and dialling out for a second time is too short. When Pronto for Windows disconnects from a Logger it waits for one second before processing continues. If data is saved very quickly or if the event is a Download to MDM file or a Check of Logger Status event the next dial out is started almost immediately. The default time of one second is sometimes too short for the modem or for some telephone exchanges and the dial out fails. This problem may not be noticed immediately for a scheduled event since the second event will succeed when it is retried after 10 minutes.


A hidden configuration setting controls the time that Pronto waits after hanging up the modem.

To fix the problem for 32 bit releases 5.00 and later:

  • On the Windows taskbar click on START and select RUN.
  • Type in REGEDIT and click OK.
  • Browse to the section HKEY_LOCAL_MACHINE\Software\Ranger\Pronto for Windows\Modem
  • Edit or Add the DWORD value DropDTRMillisecs setting it to a value greater than 1000 (for example 3000).

Note that 32 bit versions of Pronto for Windows may store their configuration settings on a per user basis instead of per machine.  To check if settings are on a per user basis examine the value of HKEY_LOCAL_MACHINE\Software\Ranger\Pronto for Windows\User Info\ProfilePerUser if the value is zero then settings are on a per machine basis otherwise settings are on a per user basis and the DropDTRMillisecs value must be stored under the key HKEY_CURRENT_USER instead of under HKEY_LOCAL_MACHINE.

To fix the problem for 16 bit releases 4.xx.

  • Using NOTEPAD.EXE or some other text editor open the file PRONTO.INI. This file is normally found in the windows directory.
  • Find the section [Modem].
  • Edit or Add the value DropDTRMillisecs setting it to a value greater than 1000 (for example 3000).
  • Save the file and exit the editor.