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Q143000: PC Ext NTMMTA: Err Msg: "No Answer" Using NULLMODM Script

Article: Q143000
Product(s): Microsoft Mail For PC Networks
Version(s): 3.5; WINDOWS:3.0a,3.2,3.2a,3.5
Operating System(s): 
Keyword(s): 
Last Modified: 30-OCT-1999

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The information in this article applies to:

- Microsoft Mail Multitasking MTA for Windows NT, version 3.5 
- Microsoft Mail for PC Networks, versions 3.0a, 3.2, 3.2a, 3.5 
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SYMPTOMS
========

When you use a null modem cable and the NULLMODM script to connect postoffices
using the Windows NT Mail Message Transfer Agent (MMTA) or the Mail Transfer
Agent (EXTERNAL.EXE), the receiving postoffice may not see a call request from
the serial port.

The sending postoffice may display an error on the screen and in the SESSION.LOG
file similar to the following, if the LogSession or -L command line option is
invoked:

  Async1 12-07-94 17:47 >>> NO ANSWER <<<

CAUSE
=====

The baud rate may not be set after the RESET or DISCONNECT procedures in the
script file are executed.

RESOLUTION
==========

To ensure that the serial port connected to the null modem cable is always set
to the desired baud rate, edit the NULLMODM.MDM file in the GLB directory on
your postoffice, and insert the baud command as shown below:

INITIALIZE:

  title "Null Modem" 
  baud 9600 
  return 0 


RESET:

  baud 9600 
  return 0


DISCONNECT:

  dtr 0                  ; drop DTR signal for a few seconds


       clearrsp               ; clear the response buffer
       wait 4                 ; give other side time to recognize lost
                              ; carrier
       dtr 1                  ; raise it back again


  baud 9600
  return 0

Once the baud command is inserted and the file is saved to disk, you will need to
run the Script Compiler program, SCRCOMP.EXE, to compile the script and create a
.SCR file.

Notes:

- If you need to adjust the baud rate, be sure that the baud rate is the same
  in all three sections (above) of the NULLMODM.MDM file. The NULLMODM script
  is not installed by default.

- For instructions on how to install the NULLMODM script, refer to the
  README.TXT file on the Supplementary Modem Scripts disk.

MORE INFORMATION
================

For additional information, please see the following articles in the Microsoft
Knowledge Base:

  Q126650 Using Null Modem Script at Higher Baud Rates Than 9600

  Q80261 Contents of Modem Script File NULLMODM.MDM

For additional information about script files, refer to Appendix E "Script Files"
in the Microsoft Mail for PC Networks "Administrator's Guide."

Additional query words: 3.50 3.00a 3.20 3.20a nullmodem direct via

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Keywords          :  
Technology        : kbZNotKeyword2 kbMailSearch kbZNotKeyword3 kbMailPCN320 kbMailPCN320a kbMailPCN300a kbMailPCN350 kbMailMMTA350NT
Version           : :3.5; WINDOWS:3.0a,3.2,3.2a,3.5

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