I'm trying to set up dual modem (MPP) connection with my ISP. I do not have cable 
modem or dsl access and will not for quite some time in my area. My computer is a 
custom home built machine with:

Soltek SL-75DRV4 motherboard
AMD Athlon XP 1800
768MB DDR PC2100 RAM
80GB WD HD
16x DVD Rom
48x12x48 CDRW
Creative SB Live
Winfast GeForce4 Ti 4200
(2x) Archtek Smartlink V.92 56k modems
Windows XP Pro OS

I had one of the modems already installed and working great. I installed the second 
modem (rather Win XP did) exactly like the first using the same drivers etc. Modem 
1 is using COM6 and modem 2 is using COM7. I set up a new connection and under the 
properties dialog box (general tab) checked both modems and set them to dial the 
same number. Then under the Networking tab I checked the Multlinking box. 

The problem is when I try to dial out. The modem 1 will connect to the ISP as normal, 
but when modem 2 trys to dial out a Line Bundling Errors dialog box pops up, which 
reads "One or more additional lines did not connect. If only a single line connected, 
the server may not be configured to accept multi-link calls. Check 'Do not attempt 
failed lines' to avoid unnecessary connection charges in such a case." 

Then the two modems are displayed with the status of modem 1 reading connected and 
modem 2 shows a message that reads "Error 633: The modem (or other connecting device) 
is already in use or is not configured properly." There are two buttons at the bottom 
of the box that will let me "Accept" or "Hang Up". I can dial out on either modem 
1 OR modem 2, but not both at the same time.

My ISP assures me that my account (and their servers) are set up for multi-linking. 
I have tried changing many of the connection settings (one at a time) with no success. 
While checking that the modems were set up properly, I did notice that the IRQ's 
for both modems are set to 11 (under the resources tab in system properties), however, 
windows reports that both devices are working properly. *Sigh* I am at my wits end 
here....

Any help, comments, or suggestions will be greatly appreciated.

Tip: Run a free scan for common Windows errors ad

re: error 633 when trying to use dual modems in XP Sunday, March 16, 2003 at 5:34 am Posted by Benrix (5 messages posted) Success. A friend of mine just arrived with the answer to my problem. He brought over a 56k US Robotics modem. After installation/setup (and with four pairs of crossed fingers) it worked! I wonder if it was because the two Archtek modems were sharing some of the same driver/resources? Oh well. Thanks for reading........ [Reply or follow-up to this message] re: error 633 when trying to use dual modems in XP Thursday, June 10, 2004 at 7:33 pm Posted by Derald Grimwood (1 messages posted) I have pretty much the exact same problem (but the error number is not displayed). Was the problem the one of the modems? Who is your ISP? Mine is Earthlink. This problem has been plaguing me for some time. I'm using XP Professional on a Dimension 8200. Thanks On Sunday, March 16, 2003 at 5:34 am, Benrix wrote: > >Success. A friend of mine just arrived with the answer to my problem. He brought >over a 56k US Robotics modem. After installation/setup (and with four pairs of crossed >fingers) it worked! I wonder if it was because the two Archtek modems were sharing >some of the same driver/resources? > >Oh well. Thanks for reading........ [Reply or follow-up to this message] re: error 633 when trying to use dual modems in XP Thursday, June 10, 2004 at 9:56 pm Posted by Benrix (5 messages posted) I no longer use the dual modem setup. Having two extra phone lines was to much for the small gain in bandwidth. As far as the modems are concerned, I never did figure out why two modems of the same type/brand would not work together in Win XP. Both of the modems worked by themselves or with a modem of another brand. My ISP is netdoor.com, they are based in MS. In my research when I was trying to get the dual modem setup to work, I remember reading something in a newsgroup somewhere, that the problem could be with the newer type 'controllerless' modems. I didn't research it much further so I don't really have any info other than what worked for me. Cheers and good luck...... On Thursday, June 10, 2004 at 7:33 pm, Derald Grimwood wrote: >I have pretty much the exact same problem (but the error number is not displayed). >Was the problem the one of the modems? Who is your ISP? Mine is Earthlink. This problem >has been plaguing me for some time. I'm using XP Professional on a Dimension 8200. > >Thanks > > [Reply or follow-up to this message] re: error 633 when trying to use dual modems in XP Saturday, June 12, 2004 at 1:59 am Posted by mraict (1 messages posted) Contact your ISP to enable Multilink Framing for your connection. [Reply or follow-up to this message] re: error 633 when trying to use dual modems in XP Saturday, June 12, 2004 at 11:52 am Posted by Benrix (5 messages posted) Good post mraict. My ISP offers a $35 a month deal for people who would like to be able to log in twice (ie dual modems). On Saturday, June 12, 2004 at 1:59 am, mraict wrote: > >Contact your ISP to enable Multilink Framing for your connection. [Reply or follow-up to this message] Tip: Use one of the [Reply or follow-up to this message] links above to add a message to this thread Search this forum Start a new thread on a different subject Report abuse of the forum Return to the Windows XP Discussion Forum