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Call Drop

  • This topic has 16 replies, 1 voice, and was last updated 14 years ago by bahar.
Viewing 15 posts - 1 through 15 (of 17 total)
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  • #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

    #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

    #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?

    #43582
    saurabh shukla
    Guest

    can u elaborate abt. inter Bts handoff’s

    #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..

    #43584
    t28
    Guest

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

    #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

    #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…

    #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

    #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.

    #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)

    ……………

    #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

    #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.

    #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

    #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.

Viewing 15 posts - 1 through 15 (of 17 total)
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