Solved

Lowering the modem DTR

Posted on 2006-11-08
5
796 Views
Last Modified: 2009-12-16
I have modem which is on leased line mode, i have entered the AT command to use as leased line mode, now i would like to reset the modem, since its in leased mode it doesn't accept any AT commads (AT&F) to reset.
My vendor advice me to sort the serial pin 1 & 20 to reduce the DTR, how can it possible? How to do? any suggestion?
Is there any other way(software) to lower the DTR so that i can run AT commands from the Hyperterminal, according to them i can only apply the AT commads by lowering the DTR.

Regards
0
Comment
Question by:joyjohn
  • 2
5 Comments
 
LVL 91

Accepted Solution

by:
nobus earned 40 total points
ID: 17897122
>>  My vendor advice me to sort the serial pin 1 & 20 to reduce the DTR  <<  then i would do it, since he's the best placed to know.
How to do? with a jumper wire.
0
 

Author Comment

by:joyjohn
ID: 17897312
I have not done before, can you suggest me how to do? with a jumper wire
Is there any link or diagram, if you have could you please provide me.
0
 
LVL 91

Expert Comment

by:nobus
ID: 17897559
did he tell you to do it with power off or on?
you have to locate the number 1 and 20 pin and short them.
Can you post a pic of the connector, or inspect it for markings (that usually indicates pin 1)
0
 
LVL 57

Assisted Solution

by:giltjr
giltjr earned 30 total points
ID: 17899957
There are no external DIP switches?  Typically a modem that can be configured for leased line mode has dip switches so you can reset it by powering it down and up.  At least every one I have dealt with does this.

If toggling DTR resets the modem, then all you should need to do is disconnect and connect the cable between the modem and the device it is talking to.

Now the other possible option is that some modems I have run across will allow you to enter an "escape" code and the modem will start accecpting AT commands again.  The escape code is typically 3 plus signs in a row and then you wait for 3-5 seconds and you get a "OK", you can then start entering AT commands again.
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

Suggested Solutions

Title # Comments Views Activity
USB Cables 4 51
Webcam indoor recommendation 21 83
My smart TV isn't so smart 14 77
Save Excel documents to PDF and RETAIN color 16 92
Hello to users to the new age of computers. There are so many products to choose from nowadays that you maybe confused to understand which product is the correct product for you. Let me explain briefly what should be the idea product for your best n…
Moving your enterprise fax infrastructure from in-house fax machines and servers to the cloud makes sense — from both an efficiency and productivity standpoint. But does migrating to a cloud fax solution mean you will no longer be able to send or re…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory. NOTE: For Outlook 2016 and 2013 perform the exact same steps. Open a new email: Click the New email button in Outlook. Start typing the address: …

746 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now