Nemo Outdoor (MOS)

[cm_rao29]

Dear All,

Is there anyone having done MOS test on their network using Nemo outdoor MOS tools?

I am having problem to meet the MOS before and after of a cluster drive!!

the before values were 85% of the samples having score > 3.0

Now i am only getting about 20% of sample having score > 3.0

This is failing the KPI. I having totally helpless...

we have changed the PSTN line... but no change:L

we even tried to conduct the MOS drive at night:eek:

we have calibrate the MOS gain tool? no idea of the optimum value??
Anyone have experience on this could be able to share your experience and views. Anyone having the optimal gain port settings for the tool

Appreciate your prompt response. Thank you.

[shahram]

What do you mean by MOS ??

[punto]

MOS = Mean Opinion Score
usually you are interested as result of a benchmarking test drive, your and other networks ... to see, how user preceive your services ...

In voice and video communication, quality usually dictates whether the experience is a good or bad one. Besides the qualitative description we hear, like 'quite good' or 'very bad', there is a numerical method of expressing voice and video quality. It is called Mean Opinion Score (MOS). MOS gives a numerical indication of the perceived quality of the media received after being transmitted and eventually compressed using codecs.

MOS is expressed in one number, from 1 to 5, 1 being the worst and 5 the best. MOS is quite subjective, as it is based figures that result from what is perceived by people during tests. However, there are software applications that measure MOS on networks, as we see below.

The Mean Opinion Score Values
Taken in whole numbers, the numbers are quite easy to grade.

5 - Perfect. Like face-to-face conversation or radio reception.
4 - Fair. Imperfections can be perceived, but sound still clear. This is (supposedly) the range for cell phones.
3 - Annoying.
2 - Very annoying. Nearly impossible to communicate.
1 - Impossible to communicate

The values do not need to be whole numbers. Certain thresholds and limits are often expressed in decimal values from this MOS spectrum. For instance, a value of 4.0 to 4.5 is referred to as toll-quality and causes complete satisfaction. This is the normal value of PSTN and many VoIP services aim at it, often with success. Values dropping below 3.5 are termed unacceptable by many users.

Hope it helps ...
P:)

[grid666]

Dear All,

Is there anyone having done MOS test on their network using Nemo outdoor MOS tools?

I am having problem to meet the MOS before and after of a cluster drive!!

the before values were 85% of the samples having score > 3.0

Now i am only getting about 20% of sample having score > 3.0

This is failing the KPI. I having totally helpless...

we have changed the PSTN line... but no change:L

we even tried to conduct the MOS drive at night:eek:

we have calibrate the MOS gain tool? no idea of the optimum value??
Anyone have experience on this could be able to share your experience and views. Anyone having the optimal gain port settings for the tool

Appreciate your prompt response. Thank you.

It would help us a lot if you can tell us what set up you are using to perform measurements ?

[cm_rao29]

Hi grid666,

please find attached for the MOS User manual and settings..

HERE (http://www.4shared.com/file/88220847/72e324d3/MOS_User_manual_and_settings.html)

[radio_network]

Hi grid666,

please find attached for the MOS User manual and settings..

HERE (http://www.4shared.com/file/88220847/72e324d3/MOS_User_manual_and_settings.html)
is that mos server and kits to be purchased sepeately. Or we can develop our own mos server. Is there any idea. I m using agilent 9.3 drive test platform.

[cm_rao29]

is that mos server and kits to be purchased sepeately. Or we can develop our own mos server. Is there any idea. I m using agilent 9.3 drive test platform.

this are for NEMO...Yes, there is additional license for it.

we did used agilent before, but faced a lot of problems due to sync error with the PSTN line. :L

with agilent, i am sure u must have VQT box for office terminal and mobile terminal.

[chachajarv]

what do you mean befoe and after? If it swap nodeB means you should check for the database. But the tools that you use for before and after same or not? as my experience usualy from problem in connector cable.

[cm_rao29]

what do you mean befoe and after? If it swap nodeB means you should check for the database. But the tools that you use for before and after same or not? as my experience usualy from problem in connector cable.

nope.. sorry cause i wasnt clear with my statement. we had used agilent MOS tool during 2005.. then 2008 we got nemo MOS tool.. Agilent tool was not so reliable....

[crisnspro]

the audio processing capability is lower than SE or Samsung

[Optim_z]

Respected All,

Please upload sample report of MOS test using Nemo Outdoor, I`m need as reference for my current projects.

Thank`s

[cm_rao29]

Respected All,

Please upload sample report of MOS test using Nemo Outdoor, I`m need as reference for my current projects.

Thank`s

what kind of report actually... for MOS we usually just average the uplink score and download scores..

depending on operators, sometimes used to average both uplink and downlink together...

[Optim_z]

Samples MOS test report (Up and Download), I`m not yet experience with Nemo Outdoor MOS.

Great Thank`s

[radio_network]

this are for NEMO...Yes, there is additional license for it.

we did used agilent before, but faced a lot of problems due to sync error with the PSTN line. :L

with agilent, i am sure u must have VQT box for office terminal and mobile terminal.
Thanks for your suggestion. But could u pl provide some mre details

[cm_rao29]

Respected All,

Please upload sample report of MOS test using Nemo Outdoor, I`m need as reference for my current projects.

Thank`s


Thanks for your suggestion. But could u pl provide some mre details

do bear a little while... ill gather it and post on Monday.. cheers:)

[datmast]

I think NEMO MOS reports r very very simple (I dunt know How r thet for ver>=5.x)
You only see score, no more information, for ex: end2end delay, echo, ...
And the method of rounding scores (in reports only) is very stupid (:p)

[cm_rao29]

I think NEMO MOS reports r very very simple (I dunt know How r thet for ver>=5.x)
You only see score, no more information, for ex: end2end delay, echo, ...
And the method of rounding scores (in reports only) is very stupid (:p)

here a sample of report from nemo MOS. basically, its just the about the score.. so operator would define their KPIs for example:

98% of the drive must be MOS >= 3.0

the report can be generated from nemo analyzer..:) its easy..

[sonar_bangla]

any friend could you upload a complete report to follow up...?

thanks.... in advanced

[cm_rao29]

any friend could you upload a complete report to follow up...?

thanks.... in advanced

i hope this could help....:)

click HERE (http://www.4shared.com/file/90135666/4e23be18/DiGi_3G_Network_Quality_MOS_Analysis_v1.html) to download

[DCA]

Biggest issue is that Nemo didn't implemented PESQ according to the ITU standard. Therefore all measurements are just nice for benchmarking.
As

You can never get a representive MOS value with a 4sec sample but it's offcourse all way of what you want to ' measure' . :p

[anh3ko]

Biggest issue is that Nemo didn't implemented PESQ according to the ITU standard. Therefore all measurements are just nice for benchmarking.
As

You can never get a representive MOS value with a 4sec sample but it's offcourse all way of what you want to ' measure' . :p
Does That mean Nemo is cheating all?
With the length of audio sample, I think 4-20seconds is not problem ... If the length>20s, MOS is bad and not accuracy...

[DCA]

Cheating is not the correct word; it's only not as mentioned/recommended by the ITU.
Which is fine as long as you don't see it as representive measurement tool.
Compile the source form the ITU and check it yourself.
Depending on your used sample you would be very much suprised.

Besides the lenght also the sample is important. if i recall correctly, it's not possible to play samples longer then 8 secs....

[sunny3792004]

Cheating is not the correct word; it's only not as mentioned/recommended by the ITU.
Which is fine as long as you don't see it as representive measurement tool.
Compile the source form the ITU and check it yourself.
Depending on your used sample you would be very much suprised.

Besides the lenght also the sample is important. if i recall correctly, it's not possible to play samples longer then 8 secs....
Right, length and structure of samples affect to MOS. I think Tems is not support truely ITU recommend too!

[sunny3792004]

Pls share experience about MOS function of tools such as Nemo , Tems , Agilent, X-cal ....
I think Agilent is best tool about MOS

[sunny3792004]

is that mos server and kits to be purchased sepeately. Or we can develop our own mos server. Is there any idea. I m using agilent 9.3 drive test platform.
I have Agilent drive test tool too. Can you share PESQ licese of Agilent?
thanks

[sunny3792004]

Hi grid666,

please find attached for the MOS User manual and settings..

HERE (http://www.4shared.com/file/88220847/72e324d3/MOS_User_manual_and_settings.html)
in your files, i see that Nemo used to get MOS. what version of Nemo support it.
I know that normally to get MOS by Nemo outdoor is config with special hardware.

[mobiltel269]

need to active with license nemo n80 can not run with mos base

[cdmahn]

I have some experience with Nemo Outdoor PESQ speech quality tests. I don't like to make Nemo people feel bad, but this tool seems to be not stable as a "true" test equipment. There are several causes that affect test score: connection jacks, handset models, ... Why could I say so? We used to use 2 equipment with different configuration to test at the same time and the test results are much different from each others. Moreover, sometimes the equipment test calls get the error "Voice Audio Synchronisation Lost".

[sunny3792004]

According to studies of ITU and some inventers, MOS depends on some factor such as structure of samples, interfaces (analog, digital, headset...), noise , interference, implementation of tester...and cablibation and config when someone conduct test.
It also depends on terminal equipment such as cell phones
Br

[ismaelhaider]

thanks for the good knowlegd

[ismaelhaider]

Can, any one tell me the tutorial site of RF

[ismaelhaider]

helloooooooo

[sunny3792004]

the audio processing capability is lower than SE or Samsung
Which phones we can use to test MOS by Nemo outdoor ?
Thanks

[sunny3792004]

almost handy or pocket software not support PESQ based MOS. they use specify parameter monitoring method.

need to active with license nemo n80 can not run with mos base

[fshoaib]

How can we see MOS results in NEMO Outdoor
I have Sagem OT290 connected to Nemo Outdoor

[datmast]

How can we see MOS results in NEMO Outdoor
I have Sagem OT290 connected to Nemo Outdoor
It need audio box ....

[momo86]

Anyone has experience to conduct MOS test using XCAL?
Please share here...

thanks..

[grid666]

Sorry, i have overlooked this thread and thus forgot to follow up earlier.

However, as DCA put it nicely Anite engineers made it arbitrary according to their own standards. So any results must be taken with reserve.:D

[gsmman2006]

Hi All,
I need to docs about WIMAX drive-test by Nemo outdoor.
thanks before