Dialogic® DSI SS7MD Programmer’s Manual Issue 3
6.8Status 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:
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•
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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
6.8.1LIU_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
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| MESSAGE HEADER |
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| Field Name | Meaning | |
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type |
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| LIU_MSG_R_STATE (0x5e39) |
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id |
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| liu_id (in the range 0 to one less than the number of LIUs) |
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src |
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| Sending module ID |
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dst |
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| MVD_module_ID |
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rsp_req |
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| Used to request a confirmation. |
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hclass |
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| 0 |
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status |
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| 0 |
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err_info |
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| 0 |
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len |
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| 1 |
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| PARAMETER AREA |
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Offset |
| Size | Name |
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1 |
| 1 | state |
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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.
Value | Description |
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0 | OK |
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1 | PCM Loss |
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2 | AIS |
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3 | Sync Loss |
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4 | Remote Alarm |
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