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Drop call…

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  • #53913 Reply

    What are the reason for Drop call for:
    Abnormal release,no activity on the radio path. (cause value 4)

    Sometimes..HO fail/drop call due to Datalink failure.N200_timer expired. What might be the reason for this ? (Rx level and qual are ok)..

    #53914 Reply

    N200 might be related to abis failures. you know that as soon as the abis is “down”, all communications in the BTS are released.

    regarding the “no activity”, i don’t know. you should check your vendor specifications, they might explain what is the trigger for such drops.

    #53915 Reply

    I have seen From ETSI 04.08 documents:
    Cause value = 4 Abnormal release, no activity on the radio path;
    indicates that some supervisory function has detected that the channel is not active.

    What does this Supervisory function mean here ?

    #53916 Reply

    the BTS is supervising the radiolink activity. So probably, this cause means there is a radiolink timeout ?

    #53917 Reply

    The mobile falls off the network i.e going into and underground car park.

    No disconnection mesg recieved from UE

Viewing 5 posts - 1 through 5 (of 5 total)
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