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DSU 6424 connection

I have 2 DSU 6426 connected thru a dedicated phone line. had a storm and now my computers are not working across this connection. i'm not that familiar with setting up DSU and Omni Mux it connects to. can anyone tell me what to look for on the DSU on each location that would tell me the DSU are connected. the DSU's have display windows on them or maybe how can i test them.

Posted by ncscomp on

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Unfortunately if the problem started after a lightning storm the modem is almost certainly fried. I used to work at the UK's largest IT support call centre, we used to check the weather reports every morning because if there had been a lightning storm anywhere in the country we'd get a slew of calls from that region from people who could no longer connect to the web. Phone-lines collect a large static charge during a storm and are unprotected. I'd strongly suggest you contact the supplier regarding replacement.

Posted on Sep 03, 2007

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The damage is not to the phone line it is to the phones. Unfortunately this is very common with powered phones as they are almost never kept on surge protectors and are very fragile. You will need to purchase a new base station to use with existing phones.
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Your DSU/CUS can set clocking/timing from the local central office (CO) or internal.
There are MANY external DSU/CSU in the market.
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Please reply with what type of T1 DSU/CSU is connected to your unit.
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Are all cards on the same rack?
Grounded?


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My Phone Is Silow Procsessing And Hang After sometime.

Probaly not your phone connection but the server you are connecting to. Try a different phone number if available ( will connect to different server ). If problem persists, this is phone line test, take computer to friends house and try connecting, do not use friend's computer as this will not verify your computer malfunctioning.
Have come across phone line issues, line static being the worst for computer use.
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What is a Lucent Pipeline P130-u-v35-asa used for

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My PC doesn't acknowledge my blackberry storm is connected. Blackberry Desktop Manager works, but nothing else does eg. Rhapsody, Windows Media Player 11. When it's connected it doesn't show in "My...

You have to isolate the problem. Please follow the steps below:

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Otherwise, you need to consult the phone manufacturer for some advise.

Have a great day!
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Connecting problems

Is it set to auto receive, is the tel line plug into socket marked line not tel. Is it used on a dedicated line, no extensions, if using ADSL you must have filter on line. If plugging standard phone in place of fax is dial tone heard and line is noise free, can you ring and speak fine on line using a phone. Is machine set to correct dial format for your country ie pulse or tone. When did it stop, have you had storms, phone work done, has it worked on this line before? I take it it copys ok is that correct.

My bet is A noisy phone line or B set to manual answer. More info equels better help, but I am short of free time now..
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You do not need a dedicated line. You just have to have a working phone line connected.
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Fax machines are designed to work on a dedicated line, any other configuration is a **** shoot.

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If you have a dedicated fax line, the fax should be connected directly to the phone line. If you have the fax line connected to one of your station ports, you may be able to see which LED lights up on your phone when the fax goes off hook. Or you can just try intercomming all extensions in order until the fax rings.
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