Measurement Counter
ZH952C:BSCRPT_INTERRAN_OUTCELL_HO_FAIL_T8_EXP
Description
This measurement provides the number of failed outgoing inter-RAT inter-cell handovers due to T8 expiry in all the cells controlled by a BSC. The types of channel include SDCCH, TCHF, and TCHH.
In the outgoing inter-RAT inter-cell handover procedure (including directed retry), if the T8 timer expires, that is, the handover failure is caused by that the BSC does not receive an LR CMD message from the source MSC in the specified time, the BSC collects the number of failed outgoing inter-RAT inter-cell handovers.
The handover can be performed between GSM900/850 and GSM900/850, between GSM1800/1900 and GSM1800/1900, between GSM900/850 and GSM1800/1900, or between GSM1800/1900 and GSM900/850.
The handover between different signaling points in a BSC is also called outgoing external inter-cell handover.
Unit
Integer number or integer.
Measurement Point
This counter is measured according to the following formula when the measurement period ends. For details on the measurement point, see "Measurement Point" of each counter in the formula.
Formula
Successful Reconnections to Old Channels upon Inter-RAT Handover Failure per BSC = 
Failed Outgoing Inter-RAT Inter-Cell Handovers (T8 Expired)
(That is, the total of the original counter Failed Outgoing Inter-RAT Inter-Cell Handovers (T8 Expired) in all the cells of the BSC.)