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EchoLife ONT Maintenance and Troubleshooting Guide

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Video Quality Monitoring

Video Quality Monitoring

Video quality monitoring enables the E2E (Edge to Edge) quality monitoring on IPTV services, facilitating real-time service quality tracking and fault diagnosis remotely.

Prerequisites

  • The user is a user with the operator authority or higher.
  • The OLT and the NMS communicate with each other properly.
  • Users under an ONT are watching a video.
  • The NMS is able to discover an online ONT and data of the Internet access service is configured.
NOTE:

To monitor the quality of videos that users are not watching without affecting other programs, configure ONT multicast emulation by following the steps provided in "Perform multicast emulation on an ONT (For ONT)" in Multicast Emulation.

Procedure

  1. (Optional) Globally configuring video quality threshold profiles

    1. Choose Configuration > Access Profile Management from the main menu (traditional style); alternatively, double-click Fix-Network NE Configuration in Application Center and choose Access Service > Access Profile Management from the main menu (application style).
    2. In the dialog box that is displayed, choose System Parameter Profile from the navigation tree.
    3. On the System Parameter Profile tab page, select the required device type from the Device Type drop-down list. In the information list, right-click and choose Add Global Profile from the shortcut menu.
    4. In the dialog box that is displayed, enter the name of the system parameter profile. Choose all parameters from the Parameters for Selection navigation tree, click to add the parameters to the Selected Parameters navigation tree, and then click Next.
    5. Choose Maintenance and diagnosisVideo Quality Threshold from the System Parameter Settings navigation tree.
    6. Configure video quality thresholds and click Finish.

  2. In the Main Topology, double-click the required OLT in the Physical Root navigation tree; or right-click the required OLT and choose NE Explorer from the shortcut menu.
  3. Choose Video Quality Monitoring from the navigation tree.
  4. On the Video Quality Monitoring tab, right-click and choose Create and Run from the shortcut menu.
  5. In the Video Quality Monitoring dialog box, set parameters and click OK.

    Figure 1-15 Video Quality Monitoring

    Table 1-6 Parameters of video quality monitoring

    Parameter

    Description

    Settings

    Location of Monitoring Point

    Definition:

    Specifies whether the location of a monitoring point is an OLT or ONT.

    Range:

    Enumerated type. The options are as follows:

    • OLT
    • ONT
    • Default: ONT.

    Monitoring Point

    Definition:

    Indicates a monitoring object.

    Relationship with other parameters:

    • When Location of Monitoring Point is set to OLT, the monitoring point is an OLT PON board which is identified by the subrack ID and slot ID.
    • When Location of Monitoring Point is set to ONT, the monitoring point is an ONT which is identified by the subrack ID, slot ID, port ID, and ONT ID.

    Setting method:

    Select a monitoring point from the drop-down list.

    Monitoring Type

    Definition:

    Indicates the service type that is monitored.

    Range:

    Enumerated type. The options are as follows:

    • BTV
    • VOD
    • Default: BTV.

    Multicast VLAN

    Definition:

    Indicates the VLAN of the video that is monitored.

    Relationship with other parameters:

    • This parameter is mandatory when Monitoring Type is set to BTV.

    Range:

    Numeral type. It ranges from 1 to 4093.

    Unicast VLAN

    Definition:

    Indicates the VLAN of the video that is monitored.

    Relationship with other parameters:

    • This parameter is mandatory when Monitoring Type is set to VOD.

    Range:

    Numeral type. It ranges from 1 to 4093.

    Source IP Address

    Definition:

    Indicates the source IP address of the video server.

    Range:

    IPv4 address format. The value is in dotted decimal notation. This parameter cannot be set as 255.255.255.255.

    Source Port

    Definition:

    Indicates the port of the video server.

    Range:

    Numeral type. It ranges from 0 to 65535.

    Destination IP Address

    Definition:

    Indicates the destination IP address of the monitored video program. If a multicast program is monitored, enter the multicast IP address which ranges from 224.0.0.0 to 239.255.255.255. If a VOD program is monitored, enter the unicast IP address.

    Range:

    IPv4 address format. The value is in dotted decimal notation. This parameter cannot be set as 255.255.255.255.

    Destination Port

    Definition:

    Indicates the destination port ID of the monitored video program.

    Range:

    Numeral type. It ranges from 0 to 65535.

    Transport Protocol

    Definition:

    Indicates the transport protocol for video quality monitoring. Only the UDP protocol is supported.

    -

    Monitoring Time

    Definition:

    Indicates the automatic stoppage time for video quality monitoring.

    Range:

    Numeral type. The value can range from 1 to 4320 or can be One Day, Two Day, or Three Day.

    Unit: min.

    Default: One Day.

    Setting method:

    Enter a value or select a value from the drop-down list.

Result

On the Monitoring Result tab, view the monitoring result. If the video mean opinion score (VMOS) macro chart fluctuates downward (indicating deterioration), check the delay factor (DF), media loss ratio (MLR), and packet loss rate (PLR) trends. Then double-click a time range within which deterioration has occurred to open the micro chart. Based on the actual VMOS, DF, MLR, and PLR values in this chart, identify affecting factors and take troubleshooting measures accordingly.

On the Monitoring Result tab, view the VMOS, DF, MLR, and PLR results displayed in charts. There are three lines representing the maximum, average, and minimum DF, MLR, and PLR values in 5 minutes. The charts are refreshed every 5 minutes. The VMOS fulfillment rate is updated every 5 minutes, which is derived from the this formula: VMOS fulfillment rate = Number of VMOS values greater than 2.5/300. (In this formula, 300 is the total number of VMOS values generated in 5 minutes, one value each second.)

Figure 1-16 Monitoring Result

Double-click a certain 5-minute time range in the chart to view the video quality monitoring results within 5 minutes. The micro chart displays the actual VMOS, DF, MLR, and PLR values in 5 minutes (one value each second).

Table 1-7 Monitoring Result Parameter Description

Parameter

Description

VMOS

Indicates the video mean opinion score, which ranges from 1 (lowest score) to 5 (highest score).

DF

Indicates the delay and jitter factors of the video stream.

MLR

Indicates the number of media packets lost in each monitoring period.

PLR

Indicates the number of IP packets lost in each monitoring period.

VMOS Fulfillment Rate

Indicates the VMOS fulfillment rate, which is derived from the this formula: VMOS fulfillment rate = Number of VMOS values greater than 2.5/300.

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Updated: 2019-07-10

Document ID: EDOC1100009118

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