Problem getting external 56k serial modem to work

Installed Kubuntu 6. 06 but I can't get my U. S. Robotics external 56k serial modem to connect. Worked fine with Ubuntu 6. 06 and Puppy Linux. Using kppp, would something else work better? Thanks. .

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Installed Kubuntu 6.06 but I can't get my U.S. Robotics external 56k serial modem to connect. Worked fine with Ubuntu 6.06 and Puppy Linux. Using kppp, would something else work better? Thanks.

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Long time since I have done a modem setup, but can you be specific about what you tried so far?
 
Did you try to set up the modem by going to Start-->Settings-->Networking?

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I'm having problems with the latest Kubuntu and a Motorola external serial 56K modem. KPPP from the menu can see the modem and will connect to the internet, but seems to be disconnected from the TCP/IP stack. No internet app will communicate.
 
From the network manager KPPP acts very differently. It doesn't see the modem at all.
 
puzzling behaviour
brained

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Take a look at the Ubuntu wiki how-to, located here.
 
Then note the modem section here.
 
What exact model number is this modem?

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The modem is the serial external 56K Motorola VoiceSURFR model 3456 EXT VS US

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I found that the network manager is causing all sorts of problems. Exit this and tell it not to load at startup. Just use kppp and all will be well.