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ISDN Channels

Posted on 1998-10-19
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Last Modified: 2013-12-27
I have a situation. I have one computer dialing into another computer through a bitsurfer pro using PCAnywhere. What I need to know is, can I use the other ISDN channel (same modem) to dial out to the internet at the same time? If so do I need to split the lines or use other equiptment?
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Question by:silkrose
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Expert Comment

by:joopv
ID: 1145181
It *should* be no problem.  But it all depends of the way the modem drivers are written.  Can you access the separate B channels when you choose the modem in dial-up-networking ?

Also the application can 'claim' the modem for itself, leaving no space for an outgoing DUN connection.

But again, if the modem driver is smart written it presents itself as 2 separate virtual modems.

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Accepted Solution

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mtieland earned 200 total points
ID: 1145182
Yes you should be able to use the other line to connect to the internet PCAnywhere uses the Windows Dialup methode so it leaves on line open. There is one restriction however, when you are useing a external ISDN modem you can not make two 64Kb connections because your serial port supports up to 115Kb. When you make one connection at 64Kb you are left with 51Kb. As the modem properly won't be able to connect at this speed you need to make two connections of 56K.

If you need more detailed support, you need to give a little bit more technical info on your driver.

Good luck
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