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Chapter 4 - Step-By-Step Instructions for Common Applications 30
CHAPTER 4 STEP-BY-STEP INSTRUCTIONS FOR COMMON APPLICATIONS
This chapter provides detailed examples that can be used as models for similar applications. Turn to the example
that is closest to your application, read the explanations, and fill in the blank spaces with parameters appropriate
to your system. At the end of the section, you should have listed all the parameters needed to configure the
router. At that point, read chapter 3 if you have not already, and configure your router with help from later chapters
of the Installation Guide, when needed.
Please read the entire example and follow the instructions before turning the router on. The router is
programmed to log the super user off after 10 minutes of inactivity. All data not explicitly saved to
memory is then lost. Collecting the data
while
configuring the router will likely cause delays and
frustration.
Example 1 Using the PR4000 as a Remote Access Server
This example explains the configuration of an E1 or T1 line with signaling, the most common option when the
PR4000 is used as a RAS. When the incoming call is made by a computer using a modem, the internal digital
modems are used to convert analog signals to digital signals. Either CAS or CCS signaling can be used in this
case. When the incoming call is made by an ISDN-BRI line subscriber (and the E1/T1 line is configured for CCS),
the digital modems are bypassed.
This section will guide you through a complete RAS configuration. Figure 4.1 shows the example system used in
this section. Spaces have been provided next to the parameters needed for the configuration so you can fill in the
parameters for your system. Do this now before continuing.