Welltech SPCI2S Intel NetStructure SS7 Boards - Manual (Page 50)

SS7 Programmer’s Manual for SPCI2, SPCI4 and CPM8 Issue 2 Page 50
Description:
This message is sent to the board to configure the operating mode a line
interface unit. All configuration parameters must be supplied in the message (it
is not possible to modify individual operating parameters in isolation). On
receipt of the message the board will first verify that the fitted hardware options
support the requested operating mode and will then initialise (or re-initialise) the
line interface unit.
The confirmation message (if requested) will indicate success by a status of 0.
Parameter Description:
A description of the permitted parameter values are given below. When the
board is initially configured all the line interfaces are initialised to a disabled
condition.
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). The preferred method for configuring
an E1 interface is to select liu_type=5.
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
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)