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This section includes the following pages which describe describing configuring your system for a basic call flow using either the ERE or an external PSX for you to quickly asses assess that your system is up and operational, especially after an initial hardware/software installation.

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Before configuring your system for production, be sure to install your applicable

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product licenses because some
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functionality is not possible without a license.


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titleERE Overview

SBC ERE

Basic and Advanced ERE

The ERE provides less routing and policy management functionality and is intended for smaller networks with no complex routing needs. Basic ERE is the default routing engine on the SBC 5x00 series for performing basic call routing services.

The ERE can be installed by selecting the embedded routing engine (ERE) option while installing the SBC application using the Platform Manager. 

SBC with ERE:

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No SBC license is required for basic routing.

The Advanced ERE is a licensed option for customers requiring expanded routing functionality.



Basic versus Advanced ERE

Features

Basic-ERE

Advanced-ERE

Maximum Number of Routes2,0002,000
Route PrioritizationRoute prioritizationRoute prioritization with more parameters
such as Time of Day and overflow routing.
Routing MechanismsRouting mechanisms such as
User Name and Standard
Destination-Based Routing.		Routing mechanisms such as User Name,
Standard Destination Based Routing, Call Type,
Digit Type and Time Range.
Call Screening and Blocking ServicesNot applicableCall screening and call blocking services to
enable a carrier to restrict calls based on either
origination, destination or both.


ERE With External PSX

You can configure the SBC to use an external PSX for routing and the ERE for fallback routing. When the external PSX is up and running, all routing is handled by the external PSX and ERE routing configurations are ignored.

Thus, in the unlikely event that the external PSX goes down, you can fall back to ERE routing by simply setting the SBC's remote server state to 'disabled' from the EMA UI.

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To set up an external PSX for routing, perform the following:

To setup this scenario, perform the following:

  1. From EMA Navigator > Policy Server, configure the remote policy server settings to use the external PSX.
  2. Provision routing for the SBC in the external PSX using the PSX Manager.
  3. From Provision > Routing in EMA, provision routing using ERE.
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For more information on the routing and policy management features supported by ERE, refer to Routing Engines Comparison.



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Refer to
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See System Administration - License Management for license installation steps and Node-Locked Licensing for license descriptions.
Note
No SBC license is required for basic routing.