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Basic Concepts

Channel Associated Signaling (CAS)

When using CAS signaling, each traffic channel has a dedicated signaling channel. In other words, the signaling for a particular traffic circuit is permanently associated with that circuit.

E&M (earth & magneto, or ear & mouth) is a type of CAS signalling that defines line signaling and register signaling. It is also called Signalling System R1 and is mainly used in North America. E&M was originally developed to allow PABXs in different geographic locations to communicate over an analog private circuit. Some digital interfaces such as CAS also use versions of E&M signaling.

The terms forwards and backwards are heavily used in descriptions of E&M.
  • Forwards is the direction from the calling party to the called party.
  • Backwards is the direction from the called party to the calling party.
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E&M Auto-Configuration

The E&M Auto-configuration feature allows the detection and the configuration of all, or a specific, E&M interfaces so that the E&M link goes up and becomes usable with a minimal user interaction.

When launching an auto-configuration process, it stops automatically when all selected interfaces have been tested. For each interface, the auto-configuration process is considered a success when the link becomes up or a failure when all combinations have been tried without having a link up.

During E&M Auto-Configuration, the following parameters are updated:
  • PortPinout : TE / NT
  • ClockMode : MASTER / SLAVE
  • LineCoding : B8ZS / AMI
  • LineFraming : SF / ESF
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E&M Preset Configurations

It is possible to save a set of configuration as presets for future E&M connections.

Using preset files is especially useful for units that do not use the default values provided by Media5. These preset configuration files are located in the file system's persistent memory listed in the DGW Web interface, under Management/File and they differ depending on the Mediatrix unit you are using.
Note: Only script files can be used as R2 Preset configuration.
It is also possible to export the current E&M configuration in a Preset Configuration file.
Note: User-defined presets are not kept in the event of a factory reset.
Installed configuration scripts/images are listed in the DGW Web interface, under Management/File
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Basic Tasks

Setting the Mediatrix Unit to Use the E&M Signaling Protocol

Steps
  1. Go to System/Hardware.
  2. In the PRI Ports Configuration table, located on the same line as the port you wish to dedicate to E&M signaling, from the Signaling selection list, choose E&M.
    Note: When changing from E&M to ISDN/R2 or ISDN/R2 to E&M, you must change your routes accordingly. For instance, if you are in ISDN with a route isdn-Slot2/E1T1, then change to E&M, you must change the route to e&m-Slot2/E1T1.
  3. From the Line Type selection list, choose T1.
  4. Click Apply.
  5. Restart the unit.
Result


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Configuring E&M CAS Parameters

Steps
  1. Go to E&M/E&M Configuration.
  2. From the Select Interface selection list, choose an E&M interface.
    Note: The number of available interfaces depends on the Mediatrix unit model.
  3. In the Interface Configuration table, configure the fields as required.
  4. Click Apply
Result


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Auto-Configuring E&M

Context
Launching auto-configuration may terminate abruptly all ongoing E&M calls.
Steps
  1. Go to E&M/Status.
  2. In the Automatic Configuration table, from the selection list, choose the interface to auto-configure.
    Note: Please note that some parameters cannot be auto-configured. For instance, the clock mode is configured according to the endpoint type, master for NT and slave for TE.
  3. Click Start Sensing.
Result
Auto-configuration on all E&M interfaces may take some time to complete. Some of the current E&M settings might be replaced by new values.

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Saving an E&M Preset Configuration

Steps
  1. Go to E&M/Status.
  2. In the E&M Preset Configuration table, in the Preset Name field, indicate the name of the Preset.
  3. Click Save.
Result
The current E&M configuration is exported. to the File management system. The preset configuration will be available in the Suggestion selection list.

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Using an E&M Preset Configuration

Steps
  1. Go to E&M/Status.
  2. In the E&M Preset Configuration table, from the Local Presetselection list, choose the configuration file to apply.
  3. Click Apply.
Result
The selected configuration is applied

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Advanced Configuration Tasks

Overriding Country Default E&M Signaling Variants

Context
Overriding the default settings is considered an advanced configuration. Media5 recommends not to modify the signalling variants unless you know exactly what you are doing.
Steps
  1. Go to E&M/Signaling.
  2. From the Select Interface selection list, choose an E & M interface.
    Note: The number of available interfaces depends on the Mediatrix unit model.
  3. In the E&M Signaling Type table, from the Override Default Signaling Settings selection list, choose Enable.
  4. Click Reset to Default to update the values with the selected country.
    Note: Once the Override Default Country Settings is enabled, the indicated values in the table are not from the specified country in the Country Selection. To get the appropriate values of the selected country, you must reset the table values first.
  5. In the E&M Signaling Variants table, complete the fields as required.
  6. Click Apply.
Result
This is an example of configuration.

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Overriding Country Default E&M Timers Variants

Context
Overriding the default settings is considered an advanced configuration. Media5 recommends not to modify the signalling variants unless you know exactly what you are doing.
Steps
  1. Go to E&M/Timers.
  2. From the Select Interface selection list, choose an E & M interface.
    Note: The number of available interfaces depends on the Mediatrix unit model.
  3. In the E&M Signaling Type table, from the Override Default Signaling Settings selection list, choose Enable.
  4. Click Reset to Default to update the values with the selected country.
    Note: Once the Override Default Country Settings is enabled, the indicated values in the table are not from the specified country in the Country Selection. To get the appropriate values of the selected country, you must reset the table values first.
  5. In the E&M Timers Variants, complete the fields as required.
  6. Click Apply.
Result
This is an example of configuration.

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Overriding Country Default E&M Digit Timers Variants

Context
Overriding the default settings is considered an advanced configuration. Media5 recommends not to modify the signalling variants unless you know exactly what you are doing.
Steps
  1. Go to E&M/Digit Timers.
  2. From the Select Interface selection list, choose an E & M interface.
    Note: The number of available interfaces depends on the Mediatrix unit model.
  3. In the E&M Signaling Type table, from the Override Default Signaling Settings selection list, choose Enable.
  4. Click Reset to Default to update the values with the selected country.
    Note: Once the Override Default Country Settings is enabled, the indicated values in the table are not from the specified country in the Country Selection. To get the appropriate values of the selected country, you must reset the table values first.
  5. In the E&M Digit Timers Variants, complete the fields as required.
  6. Click Apply.
Result
This is an example of configuration

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Overriding Country Default E&M Link Timers Variants

Context
Overriding the default settings is considered an advanced configuration. Media5 recommends not to modify the signalling variants unless you know exactly what you are doing.
Steps
  1. Go to E&M/Link Timers.
  2. From the Select Interface selection list, choose an E & M interface.
    Note: The number of available interfaces depends on the Mediatrix unit model.
  3. In the E&M Signaling Type table, from the Override Default Signaling Settings selection list, choose Enable.
  4. Click Reset to Default to update the values with the selected country.
    Note: Once the Override Default Country Settings is enabled, the indicated values in the table are not from the specified country in the Country Selection. To get the appropriate values of the selected country, you must reset the table values first.
  5. In the E&M Link Timers Variants, complete the fields as required.
  6. Click Apply.
Result
This is an example of configuration.

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Advanced E&M CAS Parameters

The PRI statistics are available in the Hardware.StatsInfo table. To reset the statistics, you must set "ResetStats" in the Hardware.StatsInfo.ResetStats parameter.

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Online Help

If you are not familiar with the meaning of the fields and buttons, click Show Help, located at the upper right corner of the Web page. When activated, the fields and buttons that offer online help will change to green and if you hover over them, the description will bedisplayed.

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DGW Documentation

Mediatrix devices are supplied with an exhaustive set of documentation.

Mediatrix user documentation is available on the Media5 Documentation Portal.

Several types of documents were created to clearly present the information you are looking for. Our documentation includes:
  • Release notes: Generated at each GA release, this document includes the known and solved issues of the software. It also outlines the changes and the new features the release includes.
  • Configuration notes: These documents are created to facilitate the configuration of a specific use case. They address a configuration aspect we consider that most users will need to perform. However, in some cases, a configuration note is created after receiving a question from a customer. They provide standard step-by-step procedures detailing the values of the parameters to use. They provide a means of validation and present some conceptual information. The configuration notes are specifically created to guide the user through an aspect of the configuration.
  • Technical bulletins: These documents are created to facilitate the configuration of a specific technical action, such as performing a firmware upgrade.
  • Hardware installation guide: They provide the detailed procedure on how to safely and adequately install the unit. It provides information on card installation, cable connections, and how to access for the first time the Management interface.
  • User guide: The user guide explains how to customise to your needs the configuration of the unit. Although this document is task oriented, it provides conceptual information to help the user understand the purpose and impact of each task. The User Guide will provide information such as where and how TR-069 can be configured in the Management Interface, how to set firewalls, or how to use the CLI to configure parameters that are not available in the Management Interface.
  • Reference guide: This exhaustive document has been created for advanced users. It includes a description of all the parameters used by all the services of the Mediatrix units. You will find, for example, scripts to configure a specific parameter, notification messages sent by a service, or an action description used to create Rulesets. This document includes reference information such as a dictionary, and it does not include any step-by-step procedures.
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Copyright Notice

Copyright © 2023 Media5 Corporation.

This document contains information that is proprietary to Media5 Corporation.

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This publication cannot be reproduced, neither in whole nor in part, in any form whatsoever, without written prior approval by Media5 Corporation.

Media5 Corporation reserves the right to revise this publication and make changes at any time and without the obligation to notify any person and/or entity of such revisions and/or changes.