Welltech SPCI2S Intel NetStructure SS7 Boards - Manual (Page 58)

SS7 Programmer’s Manual for SPCI2, SPCI4 and CPM8 Issue 2 Page 58
5.3.6 LIU CT bus Initialisation Request
Synopsis:
This message is sent to the board at initialisation time to set up a static switch
path through the card between the Line Interface Unit (LIU) and the CT bus. It
connects selected incoming voice timeslots from an E1/T1 LIU to a sequential
block of channels on the CT bus and prepares the outgoing timeslots for
subsequent use by the MVD_MSG_SC_LISTEN message.
NOTE: When using s7_mgt, this message is generated by s7_mgt as a result
of the LIU_SC_DRIVE command. It therefore need not be generated by the
user.
Message Format:
MESSAGE HEADER
FIELD NAME MEANING
type MVD_MSG_SC_DRIVE_LIU (0x7e18)
id
0
src Sending Module ID
dst MVD_TASK_ID (0x10)
rsp_req used to request a confirmation
hclass 0
status 0
err_info 0
len 10
PARAMETER AREA
OFFSET SIZE NAME
0 2 liu_id
2 2 sc_channel
4 4 ts_mask
8 2 mode
Parameter Description:
liu_id
The identifier of the E1/T1 Line Interface Unit in the range 0 to one less than
the number of LIUs fitted. This parameter can also be set to the special value
0x83 to select the signalling processor instead of an LIU. In this case timeslots
0 .. 3 correspond to signalling processor 0 .. 3 respectively.