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.
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:
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
Setting the Mediatrix Unit to Use the E&M Signaling Protocol
Steps
Go to System/Hardware.
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.
Launching auto-configuration may terminate abruptly all ongoing E&M
calls.
Steps
Go to E&M/Status.
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.
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.
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
Go to E&M/Signaling.
From the Select Interface selection
list, choose an E & M interface.
Note: The number of available interfaces depends on the Mediatrix unit
model.
In the E&M Signaling Type table,
from the Override Default Signaling Settings selection list, choose Enable.
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.
In the E&M Signaling Variants table,
complete the fields as required.
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
Go to E&M/Timers.
From the Select Interface selection
list, choose an E & M interface.
Note: The number of available interfaces depends on the Mediatrix unit
model.
In the E&M Signaling Type table,
from the Override Default Signaling Settings selection list, choose Enable.
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.
In the E&M Timers Variants, complete the fields as required.
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
Go to E&M/Digit Timers.
From the Select Interface selection
list, choose an E & M interface.
Note: The number of available interfaces depends on the Mediatrix unit
model.
In the E&M Signaling Type table,
from the Override Default Signaling Settings selection list, choose Enable.
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.
In the E&M Digit Timers
Variants, complete the fields as required.
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
Go to E&M/Link Timers.
From the Select Interface selection
list, choose an E & M interface.
Note: The number of available interfaces depends on the Mediatrix unit
model.
In the E&M Signaling Type table,
from the Override Default Signaling Settings selection list, choose Enable.
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.
In the E&M Link Timers
Variants,
complete the fields as required.
The PRI statistics are available in the Hardware.StatsInfo table. To
reset the statistics, you must set "ResetStats" in the
Hardware.StatsInfo.ResetStats parameter.
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.
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.
This document contains information that is proprietary to Media5 Corporation.
Media5 Corporation reserves all rights to this document as well as to the Intellectual Property
of the document and the technology and know-how that it includes and represents.
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.
