Disconnect intermittently but very frequently

mogulman · EVDO Newbie Joined: 16 Nov 2006 Posts: 10

Anyone had this happen? I connect and then get disconnected pretty frequently. This happens anywhere from 10 secs to 10 minutes later.

I was trying to book a reservation on a hotel web-site tonight and disconnected between each page. Ridiculous.

I didn't notice this happening before yesterday. I have a Dell D820 with a Pantech PX-500. I have the newest drivers from Sprint's web-site. Signal Strength looks to be full bars: EVDO RevA:-67 dbm, RTT -71 dbm.

I removed all the drivers and reinstalled.

Is this the Pantech card, or possibly the service in the area that I am in? (Silverthorne, CO). This is a Rev. A area that i have used in the past.

mogulman · EVDO Newbie Joined: 16 Nov 2006 Posts: 10

The wierd thing is that it seems to stay connected when I don't do anything. It seems to disconnect when I go to certain web pages or do some type of internet activity. Almost like there is is amount of data or some type of data that is causing the card to disconnect.

ed.dyer · EVDO Newbie Joined: 09 Jan 2007 Posts: 3

I have noticed exactly the same thing, except that it usually only happens when the card (S720) is in my Linksys router. When it's in the PC, it just hangs for a few minutes and then begins to retransmit...VERY frustrating. Sprint says they cannot do a thing, it's simply that service is ramping up. The thing is it worked fine a month ago.

Sometimes it's great for hours, other times it's out ALL DAY.

krash3r · EVDO Newbie Joined: 20 Apr 2007 Posts: 3

I to have been experiencing similar issues.

I have had Sprint (AC595) for about a week now, and have been getting disconnected very frequently. Sometimes, the only way to get connected again is to reboot my PC.
This has happened to me a couple times while simply browsing the web, but I can almost guarantee it will happen if I launch my FTP client and try downloading over a hundred megs.

This is a on a new Windows XP install.
I have full signal.
The issue has happened before & after I upgraded to the latest connection manager.
I tried using Windows Dial-up to connect, but my connection still freezes up.

I am in the San Diego area, I think I'm on the San Jose HA.

I am going to try changing HAs and throttling my FTP downloads, but I really shouldn't have to.
Any other troubleshooting advise?

tbhausen · EVDO Junkie Joined: 12 Dec 2006 Posts: 158

No advice, but the Sprint AC595 was a disaster on my HP NW9440 (XP Mobile Workstation--high end). If I disconnected or the connection was dropped, SCM didn't know my card existed unless I rebooted. Sprint tech support was stumped. The USB solution is so much better in my case (U720)--none of that goofy "Safely Remove..." stuff and I haven't had a connection drop yet. This includes 250MB-plus file transfers to/from my server via VPN.

Todd/Indy

ghlkal · Posted: Mon Apr 23, 2007 1:19 pm Post subject: similar

I'll chime in here too. I have an S720 in a DIR-450 router, but the same thing happens with the S720 directly connected to my laptop.

I am disconnected occasionally, but consistently. Sometimes the card will reconnect after "hanging" for anywhere from 10 seconds to a minute. At other times, I must "reconnect" the card. I have the latest firmware in the S720 and connection manager is updated (although, of course, not used when in the router).

Although I have only had my service for a month, the "disconnect" problem has steadily increased. Yesterday I was "disconnected" a dozen times in the course of about 2 hours of online work.

I was tempted to contact Sprint, but I'd rather get real answers from knowledgeable folks here Cool

Gary

gbshuler

ghlkal

jackrodgers · EVDO Addict Joined: 23 Mar 2006 Posts: 1131

Amrathe · EVDO Fledgling Joined: 06 Feb 2007 Posts: 15

I am having the same issue with 2 different PX-500's and 2 different Linksys Routers.

I've tried them in a Windows XP Laptop and in the Linksys Router, all experience the same issue. I've even done wired vs. wireless, 169 vs. 170 firmware, and various PRL combinations. I even have the routers and antenna's in totally different area's of the house. Signal is about -89db average.

It seems whenever I am using my connection it will randomly start to time out i.e. I am sending data, but receiving nothing. It isn't an inactivity issue, because I am using the connection at the time (and typing input on the keyboard). I've also noticed it is more likely to happen the larger the amount of data I am transferring. (Image heavy sites, 20meg or larger downloads). Generally the only way to restore my service is to disconnect and reconnect the modem. What is funny is both systems do not do it at the same time, so the entire tower isn't malfunctioning. (It is almost like a faulty NAT on the tower not returning my packets)

This problem is happening more and more often, and if it keeps it up I am going to have to demand a cancellation on my contract because of totally unsatisfactory network availability. (What is the point of internet if my connection constantly drops and is unusable)

And before the canned "tech support" response is mentioned. I have adjusted MTU, repositioned the antenna, replaced cables, manually set my systems to use 100/Full, and all the other basic troubleshooting. (I do network/system engineering for a living, I know the drill).

firemensfriend · Posted: Tue Apr 24, 2007 7:15 am Post subject:

I am having the same issue with my S720 and a DIR450. It seems that about once a day everything is "dead". If I go into the setup menu on the router, there is no card signal indicated. Usually if I click on "connect" service is restored. However on occasion I have to totally reset the router. My card is in the router most all of the time so I don't know if this happens while in my laptop. Is there some free WinXP software that I might use to keep visiting a website to see if this keeps things working. (Maybe an automatic Ping utility? I'm green when it comes to some of this stuff so I am open to any ideas)

Amrathe · EVDO Fledgling Joined: 06 Feb 2007 Posts: 15

ghlkal · Posted: Tue Apr 24, 2007 10:02 am Post subject:

OK, there are 6 of us experiencing this problem (glad to see it isn’t just user error on my part):

mogulman
ed.dyer
krash3r
ghlkal
Amrathe
firemensfriend

I’d like to keep this thread active and see how many others are experiencing this issue.

Gary

Amrathe · EVDO Fledgling Joined: 06 Feb 2007 Posts: 15

krash3r · EVDO Newbie Joined: 20 Apr 2007 Posts: 3

I have contacted Sprint for help on this issue.
Here is a recap of my problem:

When pushing a continuous amount of traffic, my connection stops and I can not reconnect unless my PC is rebooted. Connection manager & windows dial-up report no device found.

I tried throttling my FTP connection to 20 KB, which does lower the chance of the freeze up, but I still get locked up sometimes. Throttling the FTP connection is a B.S. solution anyhow.
My next step is to return the card and get either another AC595, or another brand. If it is not too much of a hassle to return the card, I will get another AC595 first. That way if the freeze ups stop, it is safe to assume I had bad hardware.

I will update this thread with any progress.

For the record, here is Sprints (cookie-cutter) response regarding my issue: