RIM with CSFB-Nokia

FDear
WCDMA 16
LTE FL16A
I have activated RIM with CSFB in 3g and LTE BTS and SGSN/MME.
From RAN side, there is an alarme raised juste after enabling RIM in ENB : Rim time out and Rim Status of the only association that i have is "unavailable"
From Core side, RIM counters are empty
From DT Log, no RIM message in RRC Connection Release.
Does any one can help to solve this problem of "Rim status : unavailable" and then i think alarme will be cleared.ures
I have done as described in Nokia feature documents
Thanks in advance.

Hello

yes sure it is a known problem , please just share Nokia RAN Docs and I will show you
the Solution as I am Ex Nokia RAN . Thanks

check the mme configuration and license

Hello
not related to license or configuration , it is a complete different issue
thanks

Hi

Did you solve the problem ???