Measurement Counter
ZTA03425:BSCRPT_VBS_ASS_FAIL_NACK
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 CHANNEL ACTIVATION NEGATIVE ACKNOWLEDGE messages that the BSC receives from the BTS after the BSC activates a channel.
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 Channel Activation During VBS Assignment (NACK).
Formula
CHAN ACTIVE NACK Messages Sent by BTS in VBS Assignment Procedure per BSC = 
Unsuccessful Channel Activation During VBS Assignment (NACK)
(That is, the total of the counter Unsuccessful Channel Activation During VBS Assignment (NACK) in each cell of the BSC.)