Specifications

4 Message Reference
78
4.3.5 MVD_MSG_SC_DRIVE_LIU - LIU CT Bus Initialization Request
Synopsis
Sets up a static switch path through the board between the Line Interface Unit (LIU)
and the CT Bus.
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
Description
This message is sent to the board at initialization time to connect selected incoming
voice timeslots from a T1/E1/J1 LIU to a sequential block of channels on the CT Bus
and prepare the outgoing timeslots for subsequent use by the MVD_MSG_SC_LISTEN
message.
Note: When using the s7_mgt protocol configuration utility, 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.
Parameters
The MVD_MSG_SC_DRIVE_LIU message includes the following parameters:
liu_id
The identifier of the T1/E1/J1 LIU in the range 0 to one less than the number of LIUs.
This parameter can also be set to one of the special values (0x90, 0x91, 0x92 or 0x93)
to select one of the signaling processors instead of an LIU. These values identify
processors 0 to 3 respectively. In these cases, the timeslots 0 to 31 in the ts_mask
parameter correspond to the signaling processor's signaling links.