BA2(SACCH) table
Namely BA2 list, used to inform the MS in the active mode to search the BCCH
frequencies of neighboring cells. BA list is sent through system information 5, 5bis,
and 5ter.
Note: During network optimization, all BCCH frequencies in the network
can be put into the BA2 table so as to use the performance
measuring function of the undefined neighboring cells in the traffic
statistics console to find out the adjacent missing cells.
It is recommended that the maximum frequencies should not
exceed 15.
It is extract from Huawei Docs, could someone explain the last sentence “It is recommended that the maximum frequencies should not
exceed 15”