Remote Access using ISDN with CISCO 876

[ulrich.klose]

Hi everybody,

I need to set up a dial up connection between to PC's at different sites. It should be a "classic" dial up connection (not using the internet) using ISDN.

I got a 876 router that provides the ISDN port on one side and a LAN interface on the other side. So physically the connection is no problem. However, configuring the 876 causes headache. Can anybody help?

Ulrich

[paolo bevilacqua]

What do you mean headache ? Have you configured DDR before ?

[ulrich.klose]

Hi p.bevilacqua,

thanks a lot for your reply.

What I mean with "headache" is that I don't have a real idea how to start. I mean, the 876 has an ISDN port as a backup for the dsl interface. And the ISDN port can be used for maintenance purposes. So both, dial.in and dial-out should be possible on this port. But there's not so much about this in the documentation. And there's nothing about a dial-up connection without tunneling through the internet.

These are some reasons why I'm stuck and get headache L.

Ulrich

[paolo bevilacqua · Accepted solution]

The commands are the same as with any other router, "configuring DDR". You can try yourself, and get more headache, or engange a professional that knows how to do it, and enjoy life again.

Please remember to rate useful posts clicking on the stars below.

[ulrich.klose]

Hi p.bevilacqua,

after being busy with a number of other tasks I now went back to this dialup problem.

Taking some time for digging into the configuration of DDR I finally succeeded in getting the stuff running.

Thanks, "DDR" was a good keyword.

Ulrich

[phausner · Accepted solution]

Hi Ulrich,

the ISD interface on the 876 is a full featured ISDN BRI. So you are able to use it as a backup or classical dial-in/out interface. However you need to have the ADVANCED IP SERVICES feature set to make it a standard interface. Once you have ensured this you can use any dial-config example like

http://www.cisco.com/en/US/tech/tk801/tk133/technologies_configuration_example09186a0080093c2e.shtml

Hope this helps!

Regards

PHilipp

[ulrich.klose]

Hi phausner,

thanks for your reply, just solved the problem. Interface configuration was one problem.

Don't ask for details. Sometimes it's too simple...

Ulrich