SYS INFO 1

SYS INFO 1

It contains random access control information (RACH) and cell frequency allocation table (i.e.CA table). It is transmitted on BCCH.

SYS INFO 1 - - Cell Channel Desc.
  (cell channel description format)

          - - RACH Control Parameter
(random access channel control parameter)

The maximum number of cell frequencies configured in CA(Cell Allocation) is 64. Due to the restriction of cell channel description format, the frequencies of a cell cannot be configured unlimitedly.

The formats of cell channel description are determined respectively by Cell Channel Description’s second byte Format ID (bit8, bit7, bit4, bit3, bit2).

SYS INFO 1 - RACH Control Parameter

These control parameters include:

Maximum re-transmitting times (MAX retrans)

Extended transmission timeslots (Tx_interger)

Cell Bar access (CBA, CELL_BAR_ACCESS)

Common access control level(AC)

Call reestablish permitted (RE)

       Emergency call permitted (EC)