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Thread ID: 74936 2006-12-10 21:56:00 Can't access web based email login pages using CNET cn5614xe external, serial modem. dchip (1426) Press F1
Post ID Timestamp Content User
505684 2006-12-10 21:56:00 Hey all,

I've come across a problem with an external modem that I've not encountered before, wondered if anyone could help me with it please.

modem: cnet cn5614xe external serial modem (www.cnet.com.tw)

Symtom:Modem connects to the net fine, browser dispays pages except for web based email login pages like: gmail or yahoo....possibly all but that's all I tried so far.

So far I've only had a chance to try this modem on 3 machines...all with different os's and browser's (excluding Windows machines at this stage).

All the machines I have tried the modem on have fully functioning modems (one internal intel, one internal lucent, one pcmcia dse serial modem in my laptop) installed that don't have this problem...so I think we could maybe rule out any browser versions/settings...(cookies and such) as every machine I try has no problem with the currently installed modem.

I know I haven't really given much in the way of specs at this stage, mainly as it seems to be the same regardless of other hardware/os/browser (all though I havent tried windoze yet.)

Basically I'm hoping someone my know of such an issue and can advise.....in the mean time I'll keep you posted.

Thanks
dchip (1426)
505685 2006-12-10 23:28:00 Tested in winxp with driver from disk/then latest from web...same issue.

I probably should note that I've tried with two different isp's too. (raider & paradise)

If anything the modem seems to be worse when running XP and the official driver....seems slower, and clunky....oh..hang on, that could be windoze;)
dchip (1426)
505686 2006-12-11 00:04:00 Hi
Most modems treat data as just a bit stream and leave the interpretation of contents to the receiving application.
The only significant thing I can find to distinguish the pages that fail are that they are both https pages which as you know means they are secure pages.
It would need to be a very clever modem to be able to differentiate between http and https pages.
HTH PC
Peter Cox (544)
505687 2006-12-11 00:35:00 hey peter, yeah well, all i know is I don't know:D

Normally I'd suspect a browser/os setting or such for this type of problem, but when I can run any test broswer/os configured the same but using a different modem and have no such issue...well I'm stumped as to how to proceed.
dchip (1426)
505688 2006-12-11 00:57:00 Modem probably needs a firmware update as you have isolated the problem to the modem itself.
You may have to email CNet for this (if it is even possible)
CYaBro (73)
505689 2006-12-11 03:01:00 Just a thought, are you running in v92 or v90 mode, can't see why it should make a difference but the modems that work will almost certainly be in v90 so try adding +MS= V90 to the initialisation string.

Also what error message are you getting is it just the usual "page cannot be displayed "or something more helpfull.
PC
Peter Cox (544)
505690 2006-12-11 04:02:00 I'm not sure about the v92 or v90 on all systems tried as yet but for the system I'm on atm and that's winxp, it seems to be listed as Intel v92 modem.

The error message is more os/software dependent; on this winxp machine it's the "Page Cannot Be Displayed"...on suse or puppy running firefox or emonkey, the browser remains plain, the info bar at the bottom says "done".
dchip (1426)
505691 2006-12-11 05:39:00 I know very little about Linux so lets solve the problem on winxp.
Are you using 2 different dialup networking services for the 2 modems or are you using the same service and changing the modem name to be used in the properties dialogue box for the dialup service?

PC
Peter Cox (544)
505692 2006-12-11 07:02:00 This could be an MTU problem. Some modems can cause this type of problem as they don't like the default MTU setting of 1500 in Windows and respond to it being lowered to the 576 recommended for dialup PPP.

Whether a particular modem model causes problems with secure sites or has problems sending email with attachments can also depend on the ISP network and the equipment in use so they may well work with another ISP but lowering the MTU could be the answer if it is really necessary to use this particular modem.

MS info here support.microsoft.com

Other info on MTU changes

kbserver.netgear.com
www2.kansas.net
Safari (3993)
505693 2006-12-11 07:51:00 I'm using the "internet options" dialog to set the connection properties and I've disabled the current installed modem in the Device manager. dchip (1426)
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