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Call Drop

Viewing 15 posts - 1 through 15 (of 17 total)
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  • 30th December 2005 at 14:28 #43579
    Madhu
    Guest

    Hi
    I A and B are in different MSC, and there is a call drop because of some problem in A network.

    1)Will this be a normal call B
    2)or will it be a call drop both in A and B.
    2)What messages will the BSC get in this case.

    Regards
    madhu

    3rd January 2006 at 03:54 #43580
    Dear Madhu
    Guest

    1.I think there is not always if call drop happened in A network cause call drop to in B network. for example maybe cause happened in outgoing call from network A so there is no problem with network B cause network be still can call to A network.

    2.Message that cause problem and when problem happened

    3rd January 2006 at 05:10 #43581
    Hi Madhu
    Guest

    Madhu,

    Can u plz tell me different reson for call drop.

    Does uplink interferance affect the call drop?how can we optimization this problem?

    3rd January 2006 at 08:08 #43582
    saurabh shukla
    Guest

    can u elaborate abt. inter Bts handoff’s

    3rd January 2006 at 14:31 #43583
    Tag
    Guest

    In order to prevent drop call there are basically too much to said….

    One of the most ideal way/basic way is to plan ur frequency correctly.

    Also some pareameters will also affect the performance.

    Hope that give u some idea..

    5th January 2006 at 23:10 #43584
    t28
    Guest

    drop is on which level ?
    1 cell/site/LA ???
    frequency problem ? no…
    better is check neighbour declaration on BSS & NSS level !!!

    7th January 2006 at 06:54 #43585
    Madhu
    Guest

    Hi
    Call drop can be because of many reasons
    1)Because of Handover
    2)Because of RLT
    3)Because of LAPD
    4)Because of Transmission
    5)Because of Interfernce
    6)Because of RX_Quality
    7)Because of Bad RF Planning

    Regards
    Madhu

    7th January 2006 at 11:53 #43586
    t28
    Guest

    madhu,

    all of ‘your’ resons are ussually linked to BAD frequency planing, but drops between MSC can cause by many other reasons…

    9th January 2006 at 08:18 #43587
    Madhu
    Guest

    To T28

    I have posted this question what will happen if there is a call drop in Inter MSC I have received no answer

    So I want give all possible call drops in the radio path in network A open for the person who answers

    Regards
    Madhu

    11th January 2006 at 23:25 #43588
    MihaiZ
    Guest

    Hi Madhu,

    1)The call in B network will be disconnected/releaseased by the B MSC when a certain timer (Txxxx) will expire. So, this call will NOT increment the DropCall counters in B network.

    2)No, will be considered a dropped call just in A network.

    3)Not sure, probably some sort of “Txxxx timer expired” or “MSC channel release”… maybe…

    Hope this is useful to you.

    16th January 2006 at 01:11 #43589
    Naren
    Guest

    Answering to Your questions

    1)Yes I should be a Normal call on B(MSC).I guess Message on MSC-B would recieve clear from A network.

    2)Messages in the BSC– will Vary depending on the Issues.
    a) HO fail
    b) Bad Dl/UL
    c) TCH Drops(Abis/Aif)

    ……………

    17th January 2006 at 07:50 #43590
    nkarim
    Guest

    Hi,
    call drops in a network after TA 4 although RXLEV is very good. And Calls can not be made after TA 4. can any one tell me what may be the cause of this problem??

    Regards
    nkarim

    18th January 2006 at 19:20 #43591
    Naren
    Guest

    To NKarim,

    You mean Call Drops when TA is more than 4?? If So you need to check the TEMS Logs what it says.

    19th January 2006 at 13:39 #43592
    Virgin
    Guest

    Can Any One tell me what is the effect of changing the RSL Parameter on the network…The BTS used are NOKIA….\

    BR\\
    Virgin

    2nd September 2008 at 18:45 #43593
    Johnson Crew
    Guest

    Please what can be the cause of TCH drops due to sudden loss. This site is in an urban area. thanks.

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