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Reasons for low ASR and CSR

Viewing 15 posts - 1 through 15 (of 31 total)
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  • 4th June 2006 at 07:39 #45121
    Muhammad Abu Bakar
    Guest

    Hello Friends!
    I want to know the factors affecting the Call Answer to Seizure Ratio and CSR. Any web link or stuy documents you could point out for me?

    Thanks in advance

    9th February 2007 at 09:37 #45122
    Mano
    Guest

    Any idea about how to increase the ASR.

    9th February 2007 at 10:45 #45123
    sam
    Guest

    Yep there should be some solution to this

    9th February 2007 at 10:49 #45124
    tufail
    Guest

    Hi frnds

    watz the threshold for ASR..

    regards

    10th February 2007 at 08:22 #45125
    jug
    Guest

    Where do we need to check for the deteriorating ASR

    22nd February 2007 at 04:55 #45126
    mano
    Guest

    Strange No reply for this

    24th February 2007 at 10:11 #45127
    Muhammad Abu Bakar
    Guest

    I have guessed some of them. And I’m waiting for your valuable comments.

    1. The called subscriber is busy.
    2. Called subscriber is out of coverage range (In case of mobile…)

    3. Authentication failure at IN.

    24th February 2007 at 16:23 #45128
    Pix
    Guest

    call answer to seizure ratio…

    i’ve no idea what it means 🙂 is it comparable to call setup success rate (which is (100% – sdcch drop rate) x (100% – tch assignment failure rate) ) ?

    regarding the CSR, possible problems are due to :
    1 – poor radio quality on the sdcch channel (poor coverage, interference, trx hardware failure or signalling link issues)
    2 – poor radio quality during the tch assignment phase (usually linked to hardware problem on a trx)
    3 – all tch channels are already occupied (tch congestion)
    4 – operation / maintenance activities on the cell (reset / lock / …)
    5 – Abis failures
    6 – call drop rate due to poor coverage during the call
    7 – call drop rate due to failure during a handover

    regards,
    pix

    26th February 2007 at 04:08 #45129
    Mano
    Guest

    Thanks Muhammed,I guess we are in the correct direction.Guess the first two points could be rectified by routing the call to announcments so that the call is actually processed.As for the third I need to research,Guess there are other reasons too

    Pix,Its nothing to do with the Radio Part.Its entirely core related

    26th February 2007 at 07:26 #45130
    pix
    Guest

    mano,

    that’s why it all sounds different…

    28th February 2007 at 07:05 #45131
    Muhammad Abu Bakar
    Guest

    Hello Mano!

    quote:”Its nothing to do with the Radio Part.Its entirely core related”

    I think radio interface does effect the CSR. The last two points of pix are worh consideration.

    Thanks pix!

    28th February 2007 at 07:32 #45132
    Muhammad Abu Bakar
    Guest

    Helo!

    I have come up with some more reasons for low ASR. Now I have to find details of every parameter

    1. Switch Equipment Congestion
    1. No Dialing in Long Time
    2. No Answer in Long Time
    3. No Information in Long Time
    4. No Alerting in Long Time
    5. Exceed Maximum Reattempt Times
    6. Release before Ring
    7. Release before Answer
    8. Call Barring

    2nd March 2007 at 08:49 #45133
    Mano
    Guest

    Muhammad

    AS you pinted out reasons are many,but what matters are paramters which we have control upon.For example in the list provided by you,call barring and no answer could be straightaway eliminated since it is due to the customer behaviour.

    31st March 2008 at 04:44 #45134
    Arvin
    Guest

    by the way ,may I know if you have an idea on how to improve an ASR for no answer issue?is there anyway we can minimize the no answer issue?Thanks.

    3rd April 2008 at 16:05 #45135
    Muhammad Abu Bakar
    Guest

    Arvin:
    Quote: “by the way ,may I know if you have an idea on how to improve an ASR for no answer issue?is there anyway we can minimize the no answer issue?Thanks.”

    I think you can! Put some penality on the subscribers for not answering 😉

    Or subscriber status is updated in all switch points. So if a subscriber is unavailable, No network resources are seized. Just local switch announces subscriber unavailable…

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