If the Common Channel Signaling (CCS) Network is known, you can manually enter a valid CCS Network value in the corresponding field on the LATA to CCS Network Mapping (LCN) page and then select the “Retrieve” button.
A message, “LATA to CCS Network Mapping Retrieved Successfully” will be displayed at the top of the page.
For more information on the LCN fields, their descriptions and their valid values, please click here.