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N200 timer expiry

Viewing 4 posts - 1 through 4 (of 4 total)
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  • 25th June 2008 at 09:24 #52919
    DangerousMinds
    Guest

    Hi, Can anyone please explain what does N200 timeout mean? And what should be done to rectify this problem? Also, is this related in any way to the T200 timer expiry? Thanks!

    26th June 2008 at 12:45 #52920
    Michele
    Guest

    T200 is an air interface timer regulating the communication between MS and BTS. It defines the rate of repetition of a message (on BTS side) on the air if it is not acknowledged by MS.
    If the message was repeated N200 times and no answer was received by MS, an error indication with cause T200 expired is provided to BSC.

    T200=ny1 * N200 where ny1 is configurable on BTS database

    27th June 2008 at 10:57 #52921
    DangerousMinds
    Guest

    Thanks again. Someone was telling me this is related to the LapD Signalling and T200 expiry means failure on the LapD interface. is this true?

    27th June 2008 at 13:52 #52922
    Peyo
    Guest

    It can also be related to Lapd but that’s not the same Timer. Lapd T200 is lapd N200 are different from T200 and N200.

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