Welltech SPCI2S Intel NetStructure SS7 Boards - Manual (Page 93)

SS7 Programmer’s Manual for SPCI2, SPCI4 and CPM8 Issue 2 Page 93
A1.2 LIU_CONFIG Command
Syntax:LIU_CONFIG <board_id> <liu_id> <liu_type> <line_code> <frame_format> <crc_mode>
Example: LIU_CONFIG 0 0 5 1 1 1
This command is used during initialisation to configure the operating parameters for an E1 / T1 line
interface unit.
<board_id>
The logical identity of the board in the range from 0 to one less than the number of boards supported.
<liu_id>
The identifier of the E1/T1 Line Interface Unit in the range from 0 to one less than the number of
interfaces supported.
<liu_type>
The physical type of interface according to the following table: (note that this must be selected by the
user to be appropriate for the actual hardware fitted otherwise an error status will be returned).
liu_type Description
1 Disabled (used to deactivate a LIU). In this mode the LIU will not
produce an output signal.
2 E1 75ohm unbalanced interface (for future use)
3 E1 120ohm balanced interface
4 T1
5 E1 75ohm or 120ohm setting based on fitted hardware. (This is
the preferred method of selecting an E1 interface)
<line_code>
The line coding technique taken from the following table:
line_code Description
1 HDB3 (E1 only)
2 AMI with no Zero Code Suppression
3 AMI with Zero Code Suppression (The appropriate bit in the
clear_mask parameter may be set to disable Zero Code
Suppression for individual timeslots if required) (T1 only)
4 B8ZS (T1 only)