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Thread ID: 44326	2004-04-15 22:05:00	More than one ADSL modem on the same phone line?	John H (8)	Press F1

Post ID	Timestamp	Content	User
229536	2004-04-15 22:05:00	Is it workable to have more than one adsl modem operating at the same time, through the same ISP, on the same phone line? Thanks John	John H (8)
229537	2004-04-15 22:07:00	No.	godfather (25)
229538	2004-04-15 22:13:00	Thanks gf - an economical response... Oh well, another idea for a workaround to a problematic networking issue down the gurgler. Back to the drawing board...	John H (8)
229539	2004-04-15 22:50:00	Whats the probematic network issue? The reason for the constraint of 1 modem per line is that they would simply conflict with each other as they share the same frequency spectrum. Neither could work, just the same as 56k dial-up modems cannot share the same line at the same time.	godfather (25)
229540	2004-04-15 23:31:00	OK, thanks - that makes sense. The problematic network issue is that my office is in an outside building, where I have a desktop PC and a laptop both connected to a Dynalink RTA300 adsl router. Also connected to the router is a WAP. My wife's laptop in the house connects to the WLAN via a USB wireless adapter. Generally it works fine, but of late it keeps dropping the connection. Frustratingly this is often the case when the laptop is in the middle of a large download, or when she is part way through composing a complicated email or database entry when connected via the WLAN to her school's First Class server or database (using Citrix Client). For other reasons, that laptop has recently been formatted and freshly reinstalled with WinXP Pro and all updates, so it should be in hunky dory condition. The network dropping pre-dated the formatting and reinstallation. I have tried two different USB wireless adapters of different brands, and the only difference is that network dropping happens more frequently with one than the other. When you are working on the laptop, everything seems to be going fine, then up pops the dialogue box saying there are available wireless networks and would I like to view them. That is the signal that the network has been dropped, and in the process of reconnecting part complete work is lost. I am stumped as to why this is happening, after about 18 months of successful operation. That is why I wondered whether to chuck the network idea altogether and get a separate adsl modem just for the house laptop. I do use the WLAN daily to synchronise files across all three computers, so there is a good back up strategy in place, but I don't have to do it that way and could easily drop the house laptop out of the network provided there was another way of connecting it to the net. John	John H (8)
229541	2004-04-15 23:36:00	I should have said that all three boxes are on WinXP Pro, with the office laptop dual booting with Xandros 2. The WAP is a Linksys WAP11 with signal booster and an external aerial, and the two USB adaptors I have tried are the DSE adapter ($49) which works far better than the Linksys WUSB54G Wireless Ethernet Adapter ($150). I have also tried a Linksys PCMCIA Wireless Ethernet Adapter and it does the same thing. This may be off the wall, but is wireless affected by the weather conditions????	John H (8)
229542	2004-04-16 00:06:00	> This may be off the wall, but is wireless affected by > the weather conditions???? They can be affected by the new cordless phones. The ones in the 2.4Ghz range.	Big John (551)
229543	2004-04-16 00:09:00	Your problem is not unique. I have a cvolleague (in Wellington) that has exactly the same issues, which were improved by ditching the USB in preference for a PCMCIA adapter, but not cured. I am sure its not weather. He is all indoors. I use Belkin gear here and have no problems at all. I would like to understand why, as well. He has eliminated cordless phones etc.	godfather (25)
229544	2004-04-16 00:25:00	Thanks BJ and gf . I do have a relatively new 2 . 4Ghz phone in the outside office . Can they interfere with the WLAN even if they are not in use at the time (i . e just sitting in their cradle) or do they need to be transmitting? If they need to be transmitting, that would not explain the change, but if they interfere just sitting idle in the base station, that may be the issue . . . Darn, that phone cost a bomb . John	John H (8)
229545	2004-04-16 02:52:00	Unsure about the cordless phone needing to be "on" The DECT type seem to have a polling function, as one here "knows" that the base station is on . That indicates the base station may have a constant transmit . Its 1 . 9 MHz though, so not a direct problem (but I don't have a problem with my WLAN anyway) . Certainly the distance that my WLAN will work over is not flash (20 - 30 m max) but within that its reliable . I do have another 2 . 4 Ghz cordless phone though and that cohabits with the WLAN OK . Also a 2 . 4 GHz video link operating from time to time and while that link suffers because of the WLAN, its not seemingly affected the other way around . Also your microwave oven is operating around 2 . 4 GHz . . .	godfather (25)
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