Measurement Counter
ZTA03420:BSCRPT_VBS_ASS_FAIL_TRSL_UNAVAIL
Description
During the establishment of the VBS, the MSC sends a VGCS/VBS ASSIGNMENT REQUEST message to the BSC for setting up a VBS channel. This measurement provides the number of failed VBS assignments due to the terrestrial resource unavailable. Along with Unsuccessful VBS Assignment and counters of other causes, this counter analyzes the cause of failed VBS assignments in the BSC.
Unit
Integer number or integer.
Measurement Point
At the end of each granularity period, this counter is measured by using the following formula. For details, see Unsuccessful VBS Assignment (Requested Terrestrial Resource Unavailable).
Formula
Failed VBS Assignments per BSC (Requested Terrestrial Resource Unavailable) = 
Unsuccessful VBS Assignment (Requested Terrestrial Resource Unavailable)
(That is, the total of the counter Unsuccessful VBS Assignment (Requested Terrestrial Resource Unavailable) in each cell of the BSC.)