Monitor VoIP using ManageEngine IT360

This section is common to all the editions of IT360 - Professional Edition, Enterprise Edition (Probes only) and MSP Edition (Probes only).

Here, you learn about the following with respect to VOIP monitor:

  1. About VOIP Monitor

  2. Configuring New Monitor

  3. Customizing Call Settings and Threshold Template

  4. Business Views in VOIP Monitor

  5. Viewing VoIP Monitor Alerts

  6. Viewing VOIP Monitor Reports

  7. FAQs

1. About WAN Monitor

Voice over Internet Protocol (VoIP) technology is an effective and efficient alternative to conventional phone calls. With most enterprises embracing this technology, the VoIP network managers are challenged with the task of ensuring a high quality service realtime and also be able to assess the VoIP performance by looking at the performance history. ManageEngine IT360 offers a comprehensive solution to managing your VoIP network in addition to continuously monitoring your WAN and LAN for performance. Intuitive dashboards, drill-down reports, hop graphs, and meaningful alerts, helps a VoIP administrator in getting to the root of the problem in no time. Measure and track the performance of voice quality across Wide Area Networks (WANs) using ManageEngine IT360.

ManageEngine IT360 monitors your VoIP network  and helps you achieve the following:

ManageEngine IT360 continuously monitors the key performance metrics of the VoIP network to determine its health. The parameters measured include Jitter, Latency, Packet Loss etc.


2. Configuring New Monitor

2.1 Prerequisites

 ManageEngine IT360 primarily relies on Cisco's IP-SLA for monitoring the VoIP QoS metrics between two locations, therefore both the locations should have Cisco Router enabled with IPSLA agent. From IOS Version 12.3(14)T all Cisco routers support monitoring of VoIP QoS metrics.

When you want to test a link from your office to another location, you need  a Cisco router enabled with IPSLA agent ( IOS version 12.4 or later )  at each end.

2.2. Creating a New Monitor

You just need to tell ManageEngine IT360 which paths you want to monitor i.e source and target. The source router(Cisco router enabled with IPSLA agent) should be discovered by the ManageEngine IT360.

Example: If you want to monitor voice and video quality of WAN link between your main office and the one in the branch office that you want to monitor, you need to have a Cisco router enabled with IP SLA agent in your main office and this router should be discovered in the ManageEngine IT360.

Follow the below steps to discover a source router in ManageEngine IT360:

  1. Add Credential (Note: Enter valid SNMP read and SNMP write communities of the source router). You can also add the credential during the below step: 2.

  2. Add Device (Note: Enter the Name or IP address of the source device, select the newly added credential and then click Add Device)
If the device is already added in the ManageEngine IT360 search the device from the Search field at top right corner of the window. You will get the snapshot page of the device. Now click on the Click here to change link to change Passwords. Now you will get a pop-up with Use this Snmp Credential field at the top, from this select the newly added credential and the click on OK.
  1. Enable SLA responder on the destination device you wish to monitor by following the below steps:
  1. Open a CLI Session on the destination router and enable the EXEC mode   

  2. Start the Global Configuration Mode
    Router#configure terminal

  3. Enable the IP SLA responder
    Router(config)#ip sla responder

Repeat the above steps for all the destination routers on which you want to monitor VoIP performance.

  1. Now, create the monitor by following steps:

    1. Click the Admin tab in the header pane.

    2. Click WAN RTT / VoIP link under Discovery.

    3. Click WAN RTT tab and then the Settings tab.

    4. Click Create New and enter the following details:

      1. Enter a Name for the router.

      2. Select the Source router from the list of routers discovered in ManageEngine IT360 and then select the relevant Source Interface.

      3. Specify the Source Port.

      4. Specify the Destination IP Address (e.g., enter a DisplayName and click Add to submit the details.

      5. Once you submit the details, you will see the summary of the monitor you are about to configure. Now click Apply to device to sumbit the details to the device. This will take few seconds to configure.

      6. Refresh the page after few seconds and go to all monitors page to see the new monitor. The data will be collected every 5 minutes , from the time you have configured.
Note: You can also create the monitor by navigating to: 'Networks -> VOIP Monitors -> Settings' and the by following the above step: iv.


3. Customizing Call Settings and Threshold Template

3.1. Customizing Call Settings

Define a template with the required VoIP settings to be used for monitoring performance. The VoIP template comes with pre-populated default values. Incase you would like to effect some changes to the values before initiating monitoring, make the changes as follows:

  1. Go to the VOIP Monitors Settings wizard by:

    1. Navigating to 'Networks -> VOIP Monitors -> Settings'. [OR]

    2. Clicking the Admin tab in the header pane, clicking WAN RTT / VoIP link under Add Monitor. Then accessing 'VOIP-> Settings'.

  2. Click the Call Settings tab at the left panel. Now, edit the following fields as required:

  1. Source Port - Specify the VoIP UDP port to which VoIP Monitor sends simulated traffic to generate performance metrics. The default port number is set as 16584.

  2. Simulated VoIP Codec - The VoIP jitter codec decides the type of traffic that VoIP Monitor simulates over your network.

  3. Frequency - The operation frequency is the frequency with which QoS metrics are collected by the IP SLA agent on your network to determine performance.

  4. Timeout - The operation timeout is time to wait for the response from the responder / destination device in msecs.

  5. Type of service - The Type of Service octet allows you to set precedence levels for VoIP traffic of the IP SLA operations.

  6. MOS Advantage Factor - The advantage factor is a measure, on a scale of 0 to 20, of the willingness of your VoIP network users to trade call quality for convenience.


3.2. Customizing Threshold Template

You can define a threshold template so that the VoIP performance parameters can be better suit your company SLA's (Service Level Agreements). Alerts are triggered based on the thresholds configured so that you can take corrective actions in time. Here are the steps to define a threshold template:

  1. Go to the VOIP Monitors Settings wizard by:

    1. Navigating to 'Networks -> VOIP Monitors -> Settings'. [OR]

    2. Clicking the Admin tab in the header pane, clicking WAN RTT / VoIP link under Add Monitor. Then accessing 'VOIP-> Settings'.

  2. Click the Threshold Template tab at the left panel. Now, edit the following fields as required:

  1. MOS Threshold - Configure the MOS threshold by specifying the upper and lower MOS range values in the range of 1 to 5.

  2. Jitter Threshold - Configure the jitter threshold in msecs with upper and lower threshold limites. The range is from 0 to 6000 msecs.

  3. Latency Threshold - Specify the delay allowed in msecs again in the range of 0 to 6000.

  4. Packet Loss - Specify the number of packets that can be lost in transit.

  5. Round Trip Time - Specify the round trip time value in msecs.

  6. Select Notification Profile - This the one you have already configured in ManageEngine IT360 and alerts you, when the threshold exceeds the specifed limit.


4. Business Views in VOIP Monitor

In VoIP Monitor, business views help you to know the status of the device and call path between devices at a glance. Whenever a new VoIP monitor is created, a business view of it gets created automatically, with the default background and device icons. However, you can modify the background and device icons, anytime.

In the business view, mouse-over the Device icon or Name/IP and Call Path, to view its details. Click the Device icon or Call Path to open the snapshot page of the device and the call path, respectively.

4.1 Accessing VoIP Monitor Business Views

  1. Navigate to 'Networks -> VoIP Monitors'.

  2. Click Business Views.

  3. Select the required business view from the drop down menu available on the top the business view displayed, to view it.


5. Viewing VoIP Monitor Alerts

  1. Navigate to 'Networks -> VoIP Monitors'.

  2. Click Alerts to view the alerts raised by VOIP Monitor.

All the alarms are listed with the Source name, Alarm Message, Status of the Device, Technician, Device category, date and time. Click the alarm message to view the alarm history.

6. Viewing VOIP Monitor Reports

The VOIP Monitor reports help you to view the reports on Top N paths by MOS, Top N paths by Packet Loss, VoIP Errors History Report, etc.. To generate the VOIP monitor reports, follow the steps given below:

  1. Navigate to 'Networks -> VoIP Monitors'.

  2. Click on the required report.

The generated report can be emailed or exported to a PDF version by click the respective icons on the report.



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