Which parameter can I tune on 3G Nokia to improve RRC call setup failure (cause admission control), please?
Try to find first is it related to UL or DL rejections.
It’s related to DL.
AC Fails can be due to power or code.
Confirm first and then try one of the following.
Confirmed for Power.
You can play with PtxTarget.
You can maybe improve RRC stp by switching SRB bitrate to 3.4 kbps.
You can try to use Dynamic Voice Call Prioritisation feature.
It can help if congestion is not huge.
For huge congestion, try to play with e1d and shift edge traffic to 2G.