Dialogic DSI SS7MD - Manual (Page 109)

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Dialogic
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DSI SS7MD Programmer’s Manual Issue 3
6.8 Status Request Messages
Status request messages can be used to poll the status of modules or systems running on the board.
The messages in the status request category include:
•
LIU_MSG_R_STATE - LIU Read State Request
•
LIU_MSG_R_STATS - LIU Read Statistics Request
•
MGT_MSG_R_BRDINFO - Read Board Info Request
•
DVR_MSG_R_L1_STATS - Link Statistics Request
6.8.1 LIU_MSG_R_STATE – LIU Read State Request
Synopsis
Message sent by the application to read the current state of a Line Interface Unit (LIU).
Format
Description
This message is sent to the board to read the current operating state of a Line Interface Unite (LIU). The
user should always request a confirmation message. The confirmation message indicates success with a
status value of 0 and contains the current LIU state information in the parameter area of the message.
Parameters
The LIU_MSG_R_STATE message includes the following parameter:
•
state
The current state of the LIU. The following table shows the returned permitted values and their
meanings.
MESSAGE HEADER
Field Name Meaning
type LIU_MSG_R_STATE (0x5e39)
id liu_id (in the range 0 to one less than the number of LIUs)
src Sending module ID
dst MVD_module_ID
rsp_req Used to request a confirmation.
hclass 0
status 0
err_info 0
len 1
PARAMETER AREA
Offset Size Name
1 1 state
Value Description
0 OK
1 PCM Loss
2 AIS
3 Sync Loss
4 Remote Alarm