Network system for monitoring parameters of digital VoIP gateways via SNMP protocol
The network system for monitoring the parameters of digital VoIP gateways from the TERRATEL company, hereinafter referred to as the specialized software “TTA Monitor“, allows you to control and promptly inform the telecom operator about the key parameters of the digital devices, including availability, bandwidth, as well as inform about the occurrence of emergency events.
TTA Monitor software is a specialized network monitoring system for servicing up to 500 TERRATEL digital VoIP gateways (network elements).
TTA Monitor software is a specialized network monitoring system for servicing up to 500 digital VoIP gateways (network elements) manufactured by TERRATEL.
The following network elements are supported:
- SIP/E1 Media Gateway
- iDLU Gateway
- SFP VoIP Converter
To work in the Ethernet network “TTA Monitor” uses the SNMP protocol.
SNMP (or Simple Network Management Protocol) has three key components: managed devices, agents, and network management systems (NMS). SNMP is a set of standards for communicating with devices on a TCP/IP network.
TTA Monitor software allows:
- creating and editing network elements
- automatic completion of information related to network elements
for remote maintenance and monitoring of network elements
- display system information of the device
- displays the status of a network element
- status display of E1, Ethernet and SIP channels
- software version control
- logging of emergency events or changes in device states to the database file
This manual will introduce you to the basics of working with the TTA Monitor software. It contains enough information to get started immediately.
Read the manual briefly before you start, and then refer to the relevant sections for reference using the table of contents.
Installing and running the program
Software installation is carried out according to the path specified during installation, to the PC drive, for example: D:\TTA Monitor. The main directory contains subdirectories, executable files, dynamic libraries and configuration files.
To run the program, the executable file TTA Monitor is used, which is located in the specified directory during installation, shortcut on the desktop or in the Start menu.
When you first start the program, additional files and directories necessary for the software to work can be automatically created.
General description of the interface
The TTA Monitor software has a standard single-window interface, which is the main form, divided into several functional areas, with openable child forms.
In the figure, the following interface elements are marked with labels:
- Toolbar (“1”)
- Monitoring device group (“tree” of objects – “2”)
- Open devices tabs (“3”)
- Monitoring sections tabs relative to the selected device (“4”)
- Subsidiary forms of setting and informing (“5”)
Menu Bar Elements
The main actions with the TTA Monitor software are carried out using the menu bar items.
The buttons for the menu bar items are described in the table below.
|Menu item||Tooltip||Short Description|
|Add new object||In the “tree” of objects, a new group (catalog) for device groups is created.|
|Add new device||In the “tree” of objects creates a new device relative to the selected group or outside the group.|
|Edit device or object||For a group, edit the name of the group; for a device, edit all the parameters of the selected device.|
|Remove device or object||Deletes the selected device or device group with all its contents.|
|Collapse or expand all branches||Collapses or expands the contents of the “tree” of objects.|
|Confirm all notification events||Confirmation of familiarization with all, at the moment, service messages about events on all monitored devices.|
|History||Open the history tab and search for information on the specified parameters.|
|Notification||Configuring an external modem and parameters for sending voice and SMS alerts about upcoming events.|
|Mute||Turning on/off the sound signal when an emergency event or a change in device status occurs.|
|About||Information on the current software version and technical support.|
|Exit||Completion of work with the software.|
Multi-level device menu
All monitored devices in the main window of the program are presented in the form of a multilevel or tree menu.
The tree displays the monitored devices that can be placed to the “root” of the tree or in groups (folders).
To add a group, use the button of the menu item bar – “Add new object”. In the existing tree, select any previously created element or root element of the tree relative to which a new group will be created and click the “Add new object” button.
The name of the created group is indicated on the form of adding an object.
Press the OK button to save the new group.
To cancel saving – click the “Cancel” button or the standard window close button.
The created group is immediately displayed in the device tree.
For example. Before adding a new group, the group “Point_5” is selected in the element tree. Added a new group “Point_6”.
The created group “Point_6” will be placed inside the group “Point_5”.
All group names, including the root element, can be renamed using the button on the menu bar – “Edit device or object”.
Adding a New Device
To add a new device to the monitoring program, use the menu bar button – “Add new device”.
On the open form, select the type of device to add and to go to the next step, click the “Next” button.
To cancel adding – click the “Cancel” button or the standard button to close the window.
When the TTA Monitor software is running, regardless of the type of device, when an “emergency” event occurs, when the states of the device or loops change, the main program window can “pop up” over other running programs, “blink” with the application icon in the taskbar.
In the main window, in the “tree” of monitored devices, those devices on which “emergency” events are recorded are highlighted, a sound signal is sent to the sound card of the personal computer, the name of the tab of an open device flashes in “red” color.
All actions described above are intended to draw the attention of technical personnel to the situation that has arisen.
The technical personnel should familiarize themselves with the information received and, if necessary, take measures to eliminate the situations that have arisen for each device.
To obtain information on the selected device, you need to move the mouse pointer in the “tree” of devices to the position of interest and double-click the left mouse button to open the monitoring tab of the selected device.
The main tab – “1” of the selected device contains additional tabs:
- information area – “2” with a text description of the events that have occurred
- button for turning off the sound signal for the current device – “3” – “Disable alarm”
- the button for switching to the WEB-interface of the selected device – “4”
The sound signal will stop being given and the color highlighting in the “tree” of devices will be removed when the maintenance (technical) personnel press the button “Disable alarm” – “3”. Thereby confirming that the personnel are aware of this event.
The sound signal and color highlighting of the device in the device “tree” will resume when the next event occurs.
It is possible to confirm familiarization with all messages for all monitored devices. In this case, the button of the main menu bar is used – “Confirm all notification events”.
“Device Settings” Tab
The “Device Parameters” tab displays real-time device status, call statistics (Statistics), device IP address, serial number, software version, memory status (Memory), Ethernet port status, temperature and media processor status (Temperature, Mediacore).
Call statistics “Statistics”
The “Statistics” block describes the general statistics of calls, which consists of lines with the following values:
|Success calls||Perfect conversation calls|
|Normal calls||Successful dialers without talking|
Failed calls due to:
frequency exchange error
decade dial error
overflow or insufficient memory
Tab “E1 interface”
The “E1 Interface” tab displays the E1 port map and current status.
An explanation of the possible states of the E1 interfaces is given in the “Legends” block.
TDM Interface Tab
The TDM Interface tab displays the TDM channel map and current status.
The decoding of TDM channel states is given in the “Legends” block.
The SIP Interface tab
The SIP Interface tab displays the SIP channel map and current status.
An explanation of the possible states of SIP channels is given in the “Legends” block.
External USB modem for 3G/4G networks
An external USB modem can be used to work in 3G and 4G LTE networks as an additional means of informing about the occurrence of “emergency” events, changes in the states of a device or loops.
Before using this functionality, the 3G / 4G USB modem is pre-configured in the Windows / Linux environment.
During the operation of the TTA Monitor software using an external 3G / 4G USB modem, when an “emergency” event occurs, when the states of the device or loops change, an SMS message of a certain format can be sent to the specified phone numbers, a pre-recorded voice message can be sounded or sent E-mail message to the specified e-mail address.
To configure the parameters of the software using an external modem or send E-mail messages, use the “Notification” form.
To call the form, use the “Notification” menu bar item. To configure the parameters, select the connected and configured modem from the drop-down list. After selecting the modem, the phone number of the SIM-card of the current mobile operator installed in the modem and the IMEI of the modem will be displayed.
Further, the number (or numbers) of the phone is indicated to which notifications of fixed “emergency” events will be sent. To send E-mail messages, you must enable sending E-mail (the “Send Email” option), configure the sending parameters and specify the address of the recipient of E-mail messages.
With the help of the “SMS” and/or “Call” checkboxes (in the “Phone Numbers” parameter group), it is indicated what type of notification will be sent to the specified number.
Also, using the checkboxes “Email”, “SMS” and / or “Call” (on the parameter tabs for various types of devices “Digital VoIP Gateway” / “SFP VoIP Converter”, “TTA-08”) events are selected, when when notifications are sent to the selected number (numbers) or the specified recipient’s E-mail.
To save the changes made and close the “Modem work” form, use the “Save” button. To close the form without saving the changes made, use the Cancel button or the standard window close button.
To activate sending notifications via an external modem, use the “Connect” button.
In working state, the taskbar button “Notification” takes the following form –. If the connection to the modem is not established, the appearance of the button will remain unchanged – and the broadcast will not occur.
SMS text.When an “emergency” event occurs or a change in device status is generated, an SMS message is written in “Latin”. The generated message has a specific format:
ALARM [device name] [event]
[device name] – the name of the device on which the “emergency” event or change in the state of the device occurred, relative to the “tree” of devices.
[event] – the name of the event to inform.
To use the dialer to the specified phone numbers upon the occurrence of an “emergency” event or a change in the state of the device, you must use a specially recorded sound file.
The sound file used contains a number of requirements.
- File format: Wave (PCM)
- File quality: 8000 Hz, 16-bit, Mono
- Duration: до 30 сек.
- File name: tel_out.wav
The sound file is located in the same directory as the executable file for launching the “TTA Monitor” software – TTA Monitor 2.
The “History and Log” section of the software is intended for viewing and further analysis of recorded events during the operation of controlled devices.
The view form is called through the menu bar with the “History and Log” button.
After clicking on the button, two tabs “History” and “Log” become available, using which you can select the information saved in the database that meets certain search parameters or see a list of all saved events.
The History tab consists of two areas:
- Filter setting items (“1”)
- Data display area (“2”)
To display all saved events, just select the “Date from” and “Date to” time intervals and press the “Find” button.
The found entries will be displayed in the display area.
To search the saved data in the context of monitored devices and events, use the drop-down lists “Device” and “Event”.
After selecting the search parameters and specifying the time interval, click the “Find” button.
To clear the display area, use the “Clear” button.
The “Log” tab displays all the saved events on all monitored devices from the moment the software was started or from the moment the recording area was cleared. To clear the display area, use the “Clear” button.
To call the “Settings” form, use the corresponding button on the menu bar.
The form consists of two tabs: “Main” and “Database”.
Using the parameters of the “Main” tab, you can:
- change the font size and size of the TTA Monitor icons;
- change the language of the application interface;
- configure the polling interval for devices depending on the type or use one interval for all types of devices.
Using the parameters of the “Database” tab, you can:
- clean the database of obsolete data (Clean);
- configure directories for backing up the database file (Back Up To);
- create a copy of the database in “manual” mode (Manual Copy);
- configure automatic creation of a database copy on a schedule (Scheduler);
- configure automatic cleaning history;
- enable / disable automatic deletion of the old copy of the database when creating a new copy.
To clean the database from obsolete data, use the “Clean” button.
The submitted form is responsible for choosing the date and time until which all records of the DB will be deleted.
Also, when you delete a device or group of devices using the menu bar button “Remove device or object”. All records associated with the device to be deleted will be deleted from the database.
The current version of the “TTA Monitor” network monitoring software only supports the English interface.
By agreement with the Customer, any other interface language may be added.
Benefits of Using NMS
The use of a specialized network monitoring system “TTA Monitor” for remote monitoring of the system parameters of digital VoIP gateways, as well as the status of Ethernet ports, E1 interfaces, TDM and SIP channels, allows you to minimize the risk of emergency situations. Thus, the monitoring system raises the awareness of the responsible personnel about the condition of the equipment and load, contributes to the timely adoption of adequate decisions about emergency situations (or to prevent them), reduce the time for resuming the correct operation of the communication services provided and other corporate services.