ISDN is a vital topic for today's CCNA and CCNP candidates, especially for the ICND and Intro tests - need to know ISDN, and is made from them. Of course, as a laboratory of pasta at home. What many candidates do not know is that two Cisco routers directly via their Basic Rate Interface (BRI) interfaces that you have another device between them called an ISDN simulator.
An ISDN simulator is not one of those software programsrouter claims ("router simulators"), this is a piece of hardware that works as a telephone company in the home laboratory. Older simulators with pre programmed telephone numbers and Spider, in which the program can then phone numbers that you want used to come. In both cases, ISDN simulator is ideal for your CCNA / CCNP home lab, because you can actually work online practice scenarios. And you get to those who do not, what is also important to learn how to fix it!)
You do not need a special cable or connectors just two BRI interfaces your router 'for the ISDN simulator with a straight-through cable, and you're ready to go.
In recent years, was a serious problem for 640-801, 811, and 821 studies, such as simulators used to be so expensive. new ones are still expensive ($ 600 and above), but with the sudden influx of ISDN simulators on ebay and used Cisco reseller, you can a used, that the job get to youThem.
Why is there suddenly so many ISDN simulators on the market? Cisco ISDN recently removed from the exam CCIE R & S, CCIE Rack both dealers and individuals selling their simulators. There has never been a better time to add your lab to your home ISDN. If you provided (given by extreme heat), can take a few years. The one I use for my house is bought laboratory IE still works fine.
If you are looking for a new mortgage, you buycan perform a Google search looking for sellers. I made two purchases of http://www.vconsole.com in recent years, and these two simulators have worked beautifully.
As I said, has never been a better time to add lab at home for your ISDN. Not just to try to save the theory to solve - get your hands on the actual treatment, practice, and you set the configurations, and you know what you have learned and what you do for your CCNA and CCNP exam love it!
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