User A mobile user call user B IMS user. User B have CLIP service. but unable to show the caller number.
analysis on signaling trace, on incoming point of MGCF, the from header do carry with the User A number. After the invite message pass through ATS, the from header become "Unavailable".
check details on ATS inter-module message, ATS do able to get the A number.
double check on the configuration, found that LST MBLPFX:;, not any configuration is make.
configure back the missing data by execute:
ADD MBLPFX: OPPRE=K'1;
re-test the scenario.
MBLPFX was not configured.
Add Mobile Prefix (ADD MBLPFX)
This command is used to add a mobile prefix data record to the configuration database.
During number analysis, the system checks whether the dial number contains a mobile prefix to determine whether the dialed number is a mobile number.
If the dialed number is a mobile number, the system does not add a national area code to the mobile number during number normalization.