Specifications

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DSI SS7MD Network Interface Boards Programmer's Manual Issue 4
51
4.3.8 MVD_MSG_SC_CONNECT - Connect Request
Synopsis
Message sent to the board to control the switch path.
Format
MESSAGE HEADER
Field Name
Meaning
type
MVD_MSG_SC_CONNECT (0x7e1f)
id
0
src
Sending module ID
dst
MVD_module_ID
rsp_req
Used to request a confirmation.
hclass
0
status
0
err_info
0
len
16
PARAMETER AREA
Offset
Size
Name
0
2
local_stream
2
2
local_slot
4
2
mode
6
2
source_stream
8
2
source_slot
10
2
dest_stream
12
2
dest_slot
14
2
Reserved. Must be set to 0.
Description
This message is sent to the board to control the cross connect switch. Several different
actions can be performed depending on the value of the mode parameter. These
include:
• Cross connect switch to CPU local bus stream connection
• Local bus to cross connect switch connection
• Duplex connection between cross connect switch and CPU local bus stream
• Duplex connection between local bus timeslots
Attempting to use this message in a run mode where the cross connect switch is
disabled will result in a failure return code.
The confirmation message (if requested) indicates success with a status value of 0.
Parameters
The parameters that can be included in the MVD_MSG_SC_CONNECT message depend
on the requested mode. The following table depicts the parameters that are required
for each possible mode: