Dears,
Consider a roaming agreement with the competitor network for the areas where we don’t have coverage.
When the UE loses the coverage of the home PMLN it should reselect to the host PLMN (Coverage is present) but UE is unable to do so, rather the UE is able to camp on the host PLMN after forced PLMN selection of the host network and able to make the call.
Any experience with this, are we missing something?
Thanks!
Thanks @Tammam.Hajj. UE is able camp when it is forced to select.
Question is why it is not doing it automatically itself.
We are going to trace it with the host PLMN now.
Best choice to make the trace on the gateways between of both operators and good to trace a test UE/simcard to locate exactly the failure (it can be related to timers time out or mis- configuration).
Not necessarily, forcefully UE can try to camp even on FPLMN.
Check the SIM files related to OPLMN & UPLMN and also Attach/TAU Accept eplmn fields.
If these are not valid, then UE will search and attempt camping as per 23.122 : EHPLMN > UPLMN > PPLMN > Random PLMN as per signal levels.
In case UE is staying in Limited service, it might be trying to attempt on any random PLMN and getting Rejects.