Measurement Counter
ZTA03410:BSCRPT_VGCS_ASS_FAIL_NACK
Description
During the establishment of the VGCS, the MSC sends a VGCS/VBS ASSIGNMENT REQUEST message to the BSC for setting up a VGCS TCH. 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 on the measurement point, see Unsuccessful Channel Activation During VGCS Assignment (NACK).
Formula
CHAN ACTIVE NACK Messages Sent by BTS in VGCS Assignment Procedure per BSC = 
Unsuccessful Channel Activation During VGCS Assignment (NACK)
(That is, the total of the original counter Unsuccessful Channel Activation During VGCS Assignment (NACK) in each cell of the BSC.)