I am In Huawei and we are also facing the same issue with explanation made by SA
CSSR is degraded due to SDCCH establishment failure mapped on LAU procedure: no answer to Immediate Assignment
can anybody share any final conclusion or report or any patch introduced by any vendor.
One good solution for satisfying customer can be excluding the LU assignments from CSSR formula 🙂
Any solution, kindly share it on firstname.lastname@example.org