This section describes how to configure your system for a basic call flow using either the ERE or an external PSX, and how to quickly assess that your system is operational — especially after an initial hardware/software installation.
ERE 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:
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 Routes | 2,000 | 2,000 |
| Route Prioritization | Route prioritization | Route prioritization with more parameters such as Time of Day and overflow routing. |
| Routing Mechanisms | Routing 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 Services | Not applicable | Call 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.
To set up an external PSX for routing, perform the following:
To setup this scenario, perform the following:
- From EMA Navigator > Policy Server, configure the remote policy server settings to use the external PSX.
- Provision routing for the SBC in the external PSX using the PSX Manager.
- From Provision > Routing in EMA, provision routing using ERE.
For more information on the routing and policy management features supported by ERE, refer to Routing Engines Comparison.
Refer to System Administration - License Management for license installation steps and Node-Locked Licensing for license descriptions.
Overview
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