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US external 56k won't detect dial tone

By cschauf ·
I have a new 56k external usrobotics that will deltect tone on one locatation but not in another. Locations are only 3 miles apart in a rural area. The wierd thing is that a different modem (LT winmodem) will detect tone in the location that the "better" usrobotics modem will not. It worked at one time and the phone company has been out and test the line. What gives? When I try to initiate a call with DUN, the sound that comes out of the modem is like someone trying to tune in an AM station on a old radio. Very strange. I have been working with modems for a long time and never have I heard such strange noises. Any help would be appreciated.

Chad Schauf
Information Systems Specialist

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US external 56k won't detect dial tone

by lori In reply to US external 56k won't det ...

I have heard those strange noises on a phone line that obviously had taken somekind of hit. The modem on another line would connect for 1 minute. I replaced the internal modem and all worked ok here, but would not work with the original phone line that is about 3-4 miles away. Dialed out but strange noices. Phone company checked the line and said was o.k. also. Also there maybe too much line noice for the modem to detect dial tone.
Hope this helps.
Lori

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US external 56k won't detect dial tone

by cschauf In reply to US external 56k won't det ...

Why would one modem work and not another one. The one that doesn't work in that location, works perfectly in my location. The phone company also tested the line with a modem tester, whatever that is.

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US external 56k won't detect dial tone

by trichard In reply to US external 56k won't det ...

You may want to try a line noise filter to see if that helps... Also, try placing 2 or 3 commas IN FRONT of the phone number you are trying to dial. I have seen that fix a few dialup problems in the past.

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US external 56k won't detect dial tone

by cschauf In reply to US external 56k won't det ...

What is a line noise filter? I tried the commas but that didn't help at all.

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US external 56k won't detect dial tone

by lori In reply to US external 56k won't det ...

I would say one is more sensitive to line noise. This is a long shot. Is the phone line pulse only, not tone? In our area there is extra charge for tone. You don't see it too often, and I don't remember exactly what happens when you dial. I just know you can not call out. Since it is ext. and int.,I don't know if one could be dialing pulse and the other tone. I said it was a long shot.

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US external 56k won't detect dial tone

by cschauf In reply to US external 56k won't det ...

I tried both pulse and tone. Neither one worked on the external. I only used tone on the internal modem and it works fine.

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US external 56k won't detect dial tone

by gregory.ginter In reply to US external 56k won't det ...

Are you using the same line cable from the modem to the wall? A typical line cable has 4 wires in it. You actually only use 2 wires. Generally, it's the center 2 wires. It is possible that the phone co. activated the outside 2 wires, and your line cable only has the center 2 wires wired up. It's also poosible that the USR is only setup to use the center 2 wires whereas the cheaper modem might be setup to use all 4 wires.

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US external 56k won't detect dial tone

by cschauf In reply to US external 56k won't det ...

I tried several different wires. All worked on the internal and none on the externat. This is a good one isn't it?

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US external 56k won't detect dial tone

by TonyP_FNO In reply to US external 56k won't det ...

I had lots of trouble with my modem after being forced to reinstall it. I was only able to sporatically get it to work, presumably because of line noise on my home phone lines. I went to the manufacturer site and downloaded newer drivers and it began working. Also I was told that in some cases it is necessary to turn off V.90.

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US external 56k won't detect dial tone

by cschauf In reply to US external 56k won't det ...

The wierd thing is that the cheaper less efficient winmodem works on the same line. I have never had a problems like this with a brand new external usrobotics modem. Plus, it did work for a while. I am sure it has something to do with noise or something, but what? Do you know of a setting I can use on the external modem to better handle line noise. They usually excell in this area. I have had many winmodems not work with line noise and put in one of these modems and had good success.

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