Nec 900c disconnect on connection

Hi,
this issue it driving me crazy. I usually connect over the net with my Samsung Omnia through bluetooth socket cf card.

It connects but on after a while it drops connection and I have to reconnect again.

I'd like to point out that I connect in the same way using my Sigmarion III and this issue doesn't happen but only with my NEC 900c. I tried also to hard reset it and install only socket bluetooth driver and Opera 8.62 but no way.

Since Omnia is a WM 6.1 and this release does not have DUN connection anymore, I use a program called PDANet that give mobile this capabilitiy.

So, what might be the problem?

Some web pages that crashs connection, cmonex 2.0 rom that doesn't handle mobile bluetooth connection properly.

If someone had the same problem in the past and worked it out, please let me know or whatever solution is appreciated.


P.S.: This happens only on mobile connections not wifi.

I used to have a similar problem with my NEC 900c with cmonex2.
However my problem was with the WIFI connection.

The device would search the available networks, then was showing it connected to my preferred one and immediately after authenticating it would disconnect.

I had changed passwords, various security protocols, everything I could imagine, many soft and hard resets.
Then at some point I re-flashed the cmonex2 rom.

AND amazingly it worked. After that I could connect with no problem. Problem solved. I have no clue what was wrong though.

So, you suggest to reflash cmonex rom. I'll wait for some other advice then I try.

Sly, you are setting the standard for investigation in this area...I doubt there are a handful of people using the 900C via bluetooth with a Samsung in the entire world!

Persevere!

But that was happening also with other brands of mobile. MAybe it is not the phone the problem.

I agree...it is not the phone, rather it is the Mobilepro itself. Something in the OS or hardware that is causing the signal to time out or drop out. Most likely it is the Socket bluetooth card and driver....but only when used with the Mobilepro.

So this must be an issue of MobilePro, if I get it straight. I'll try to reflash the rom and see what happen. Thanks

I doubt it was the Cmonex flash, but you might try reflashing using the stock CE.NET flash first, and if the problem disappears, then try Cmonex and see if it comes back.

I downgraded my NEC 900c to CE Net 4.2 and installed only Socket bluetooth driver and Opera (with Redgear). The problem presists. I tried also to install a different driver version for Socket bluetooth but nothing has changed. I noticed that, for example, when I open windowsfordevice site, after a bit of loading NEC drops connection.

It is very strange. NEC 900c let me down on this point, thinking also that this doesn't happen wiht the Sigmarion III.

It may be some sites are sending some special code, some java app, or something that the Mobilepro cannot interpret...

I'd love to know a javascript code line that can bring down an ethernet interface that hasn't already cost Microsoft $4 billion.

The best thing that I can think of is that for some reason perhaps there is a buffer overrun in the NIC interface and the driver itself is throwing an unhandled exception for some reason (unknown) - perhaps the NEC can't process the established flow control negotiation correctly.

Is there an option in the driver to decrease the attempted connection speed that the BT card attempts to partner at? My unconnected thinking here is that if you can reduce the flow rate perhaps you can avoid your crashout.

Do you mean to decrease com port speed?

If it will let you, try it.

No way. Even reducing com port speed on NEC result in the same issue.