X28 Dialup via Reverse Charge

Before calling the host to be tested with your NUI (or via your direct X.25 link), you may want to see if the remote DTE accepts reverse-charge calls. Your customer may not be aware of this network configuration, and you would want to note this in your security report.

In this case, the syntax and procedure are the same as for an X.28 call using an NUI, except you won't insert an NUI but only the NUA (or the full X.121 address, if your X.25 carrier supports the international reverse-charge facility) you want to test.

SprintNet, by default, allows international reverse-charge in their subscription contracts. That's why their X.25 network is scanned so extensively from all over the world, especially from Russia and South America.

Was this article helpful?

0 0
The Ultimate Computer Repair Guide

The Ultimate Computer Repair Guide

Read how to maintain and repair any desktop and laptop computer. This Ebook has articles with photos and videos that show detailed step by step pc repair and maintenance procedures. There are many links to online videos that explain how you can build, maintain, speed up, clean, and repair your computer yourself. Put the money that you were going to pay the PC Tech in your own pocket.

Get My Free Ebook


Post a comment