mobiles are losing the network

[zeezzoo]

hello friends


i have a problem in my network after sawpping from NSN to Huawei 6900 .
some of mobiles are turning to "Emergency Calls" mode after doing a location update . I checked & it's not a radio problem (Signal Strength is good) .

when the mobile was in this emergency calls mode , i tried to do a manual plmn selection to the HPLMN but i had this message : "your sim card doesn't allow a connection to this network" . the only way to restore the service is by restarting the mobile .

any one faced this problem before ?
is there any parameters i have to check (Radio & Core) ?

[adewijaya]

yes, its normally happend. You do manual location update or by system

[rishi]

hello friends


i have a problem in my network after sawpping from NSN to Huawei 6900 .
some of mobiles are turning to "Emergency Calls" mode after doing a location update . I checked & it's not a radio problem (Signal Strength is good) .

when the mobile was in this emergency calls mode , i tried to do a manual plmn selection to the HPLMN but i had this message : "your sim card doesn't allow a connection to this network" . the only way to restore the service is by restarting the mobile .

any one faced this problem before ?
is there any parameters i have to check (Radio & Core) ?

why dont to try to suggest a implementation of TMA which can be cause of possibility?

[zeezzoo]

thank you friends . the problem is solved .
it was a faulty board in the core side (STP Board)