Wise TSW800TP Manuel utilisateur

Operation Manual

IPTV

Annex to TSW800TP Operation Manual

Version: 4

Revision: 7

September/2010

•This manual was created by Wise Telecommunications Industry. No part or contents

of this manual may be re-created without written authorization of Wise Telecommuni-

cations Industry.

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characteristics and functionality may not be included in the manuals during time of print;

they may be added as future annexes

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or manual will be welcomed by Wise Telecommunications Industry.

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ations please contact Wise Telecommunications Industry directly:

Phone: 55-61-3486-9100

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Wise Telecommunications Industry

Setor de Ind´ustria Bernardo Say˜ao

SIBS quadra 01 conjunto D lote 12

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Please visit our homepage: http://www.wi.com.br

Contents

1 Operation 3

2 IPTV Test Conﬁguration 4

2.1 IPTVTabs ....................................... 4

2.2 IPTVTestviaEthernet ................................ 4

2.3 IPTVTestviaxDSL.................................. 4

2.4 IPTVconﬁgurationscreen............................... 4

3 IPTV Test Application 6

4 IPTV Test Conclusion 12

IPTV

1 Operation

The TSW800TP IPTV module has been developed to provide all of the required information

for the installation, maintenance and troubleshooting of IPTV (Internet Protocol TV ) and

VoD(Video on Demand ) services on xDSL lines.

It veriﬁes if the video stream is being sent by a IPTV or VoD server and performs several

measurements to assesses the connection quality. Flow rates (audio, video and data) are mea-

sured separately, as well as the total packets of each ﬂow. Several types of errors, which ease the

maintenance, are also measured, including, packet loss, packet delay / jitter, and measurement

of the expected performance.

The most important parameters are compared with predeﬁned Quality of Service thresholds

levels (QoS).

TSW800TP allows physical testing via Ethernet or direct on xDSL lines. The capability of

the TSW800TP includes the following measurements:

•Errors

–Continuity Errors

–Error Indicator

–Synchronization Errors

–RTP packet Loss

–Out of sequence RTP packets

–RTP packet Discontinuity

•Jitter Measurements

–PCR Jitter

–Network Jitter

–Histogram of packet Jitter and PCR of the last 5 minutes.

•Stream Statistics (ST)

–Total of Video packets

–Total of Audio packets

–Total of Data packets

–Total of Unknown packets

•Stream Rates

–Video stream rate

–Audio stream rate

–Data stream rate

–Unknown stream rate

•Channels number (PIDS of PAT)

–Each channel Band Usage Percentage

•IGMP Measurements

–IGMP latency ( time between ordering the channel and when stream arrives )

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IPTV

2 IPTV Test Conﬁguration

2.1 IPTV Tabs

Initial screen with main tabs ETHERNET, LINE, SYSTEM and MODULES.

2.2 IPTV Test via Ethernet

From the HOME screen Select Ethernet by pressing the F1 key. Before entering the IPTV

module, press the numeric #2 key or move the cursor using the up and down keys to Ethernet

Conﬁguration and press START/STOP (Start/Stop keys may be used as an ENTER key

as well) to conﬁgure how to obtain IP addresses (manual or automatic). If the TSW800TP MAC

address is required to be the same of the STB MAC address, the conﬁguration can be done in

this screen also.

More information about the Ethernet Conﬁguration item may be viewed at the TSW800TP

basic manual. To enter IPTV module, go back to initial screen, by pressing F1, and press numeric

key 4 or move the cursor to the IPTV item and press START/STOP.

2.3 IPTV Test via xDSL

Select Line tab and conﬁgure the line as described on TSW800TP basic manual. To enter

IPTV module, go to initial screen, by pressing F1 and press numeric key 4 or move the cursor

to IPTV item and press START/STOP.

2.4 IPTV conﬁguration screen

Test, via Ethernet or via xDSL, have the same conﬁguration screen:

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IPTV

•F1 - Home : Go back to initial screen;

•F2 -View: Shows ten screen options to be visualized. See section 3;

•F3 - Actions: Shows Start/Stop and results saving options. See section 3;

•F4 - Edit: Allows to edit the parameter where the cursor is;

•Stream: Up to three streams (video ﬂows) can be started.

•Protocol:

This parameter deﬁnes the transport protocol type. Although video codiﬁcation protocol

is MPEG-4, the transport mechanism used is MPEG-2 Transport Stream. TS packets

may be encapsulated into UDP/IP or RTP/UDP/IP. IPTV uses IGMP protocol (Internet

Group Management Protocol) to get into a multicast group, diﬀerent from VoD, that uses

RTSP (Real Time Streaming Protocol ) to get into a unicast group.

Multicast MPEG2-TS/UDP: MPEG-2 TS packets are encapsulated into UDP/IP.

Multicast MPEG2-TS/RTP: MPEG-2 TS packets are encapsulated inside RTP pack-

ets, which are encapsulated into UDP/IP.

Multicast MPEG2-TS/RTP BrT: MPEG-2 TS packets are encapsulated inside RTP

packets, which are encapsulated into UDP/IP (little-endian).

Unicast MPEG2-TS/UDP: MPEG-2 TS packets are encapsulated into UDP/IP.

Unicast MPEG2-TS/RTP: MPEG-2 TS packets are encapsulated inside RTP packets,

which are encapsulated into UDP/IP.

Unicast MPEG2-TS/RTP Brt: MPEG-2 TS packets are encapsulated inside RTP

packets, which are encapsulated into UDP/IP (little-endian).

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IPTV

•IP Address:

This parameter deﬁnes the desired IPTV channel IP address. It is necessary to know the

speciﬁc IP address to send a IGMP packet asking to get into the multicast group that

is receiving the channel. Only after the request is accepted, will the video stream starts.

This ﬁeld appears only if multicast protocol is selected.

•URL (RTSP):

This parameter deﬁnes the URL of the VoD server. It is necessary to know this URL to

send a RTSP packet asking to get into the unicast group. The video stream starts after

this request is accepted. This ﬁeld appears only if an option with unicast is selected.

•Port Number:

This parameter deﬁnes the port number which IPTV communication will use. Only ap-

pears if a multicast protocol is chosen.

3 IPTV Test Application

Press the F3 key (Actions), select Start Stream 1, then press START/STOP to start the

ﬁrst IPTV test. It is possible to activate all three streams simultaneously.

If the protocol chosen is a multicast, an IGMP packet will be sent. Choosing a unicast

protocol (VoD), a RTSP packet will be sent and the video ﬂow should start in a while. Through

F2 key (View), a pop-up menu gives access to many others screens. The description of each

option is given below.

•Video Conﬁg

Press #1 Key or select 1.Video Conﬁg and press START/STOP key to close pop-up menu

and show the initial conﬁguration screen.

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IPTV

•IP results

This screen shows received IP, Gateway IP, DNS server IP and the Subnet mask.

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IPTV

•Stream Statistics

This screen shows TS packets total count (MPEG-2 transport packet, with 184 data bytes

and 4 header bytes). Each TS packet has a PID that is analyzed to see if the packet should

be counted as video, audio, data or unknown packets. Total bytes are also informed. F4

key (Stream) deﬁnes which stream will have its counters shown.

•Stream Rates

This screen shows Kbps rates for diﬀerent types of packets: video, audio, data and un-

known.

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IPTV

•QoS Stream

This screen shows the QoS parameters, its current and maximum values and the assessment

of the quality of service, comparing with the predeﬁned boundaries.

– PCR Jitter (Program Clock Reference)

Measures the evaluated jitter, analyzing the reference clock, recorded into same pack-

ets. Jitter is the oscillation of time interval between packets received, comparing the

time recorded when it was generated. This interval should be equal to the diﬀer-

ence between the recorded times, but the decoder and the network may delay some

packets. If there is an excessive oscillation, the decoder may have problems. The

maximum jitter to approve quality of service is 10ms.

– Latency

Measures the time between the transmission of a request to receive a program (stream)

and the moment when the packet ﬂow starts. The maximum latency to approve

quality of service is 250ms.

– Continuity Error (Cont. Err.)

Measures the packets’ sequence loss. The MPEG-2 TS packet has a sequence counter

that allows the receiver to know a packet did not arrive by the required time. QoS

screen: This counter looks at percentage, it counts the total continuities errors divided

by the total MPEG2 TS packages. The maximum percentage to approve the service

quality is 0.1

– Error Indicator (Err. Ind.)

Indicates there was a problem during the generation. This indication is done by the

encoder when it detects corrupted source content. It is not related to the performance

of the distribution network. Only the value zero approves quality of service here.

•QoE (Quality of Experience)

The new term used to assess the media quality percept by the ﬁnal user. To measure QoE

at IPTV, the MDI (Media Delivery Index) is used. This index is composed of DF (Delay

Factor) Jitter and MLR (Media Loss Rate). MDI is ruled by RFC 4445.

– DF Jitter

Its a measure that indicates the amount of video, in milliseconds, needed to be stored,

considering the instantaneous video rate, to avoid jitter eﬀect at the ﬁnal user video.

This parameter gives a hint of the minimum size of the buﬀer required at the next

node.

– MLR

Represents the amount of media packages that are lost per second. Losses due to

buﬀer overﬂow which occurs when there is network jam or when there are bad network

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