Dialogic® DSI SS7MD Programmer’s Manual Issue 3
6.3.1 LIU_MSG_CONFIG – LIU Configuration Request
Synopsis
Message sent by the application to establish the operating mode for a Line Interface Unit (LIU).
Note: When using the s7_mgt protocol configuration utility, this message is generated by s7_mgt as a result of the LIU_CONFIG command. It therefore need not be generated by the user.
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_CONFIG (0x7e34) |
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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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| 40 |
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| PARAMETER AREA |
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Offset |
| Size | Name |
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0 |
| 1 | liu_type |
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1 |
| 1 | liu_code |
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2 |
| 1 | frame_format |
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3 |
| 1 | crc_mode |
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4 |
| 1 | build_out |
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5 |
| 6 | Reserved. Must be set to 0. |
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11 |
| 1 | ais_gen |
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12 |
| 6 | Reserved. Must be set to 0. |
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18 |
| 1 | high_Z |
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19 |
| 2 | clk_options |
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21 |
| 19 | Reserved. Must be set to 0. |
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Description
This message is sent to the board to configure the operating mode of a Line Interface Unit (LIU). All configuration parameters must be supplied in the message, that is, it is not possible to modify individual operating parameters in isolation. On receipt of the message, the board first verifies that the fitted hardware options support the requested operating mode and then initializes (or reinitializes) the LIU.
The confirmation message (if requested) indicates success with a status value of 0.
Parameters
A description of the permitted parameter values are given below. When the board is initially configured, the LIUs are initialized to a disabled condition. The LIU_MSG_CONFIG message includes the following parameters:
•liu_type
The physical interface type according to the following table. The preferred method for configuring an E1 interface is to set a value of 5.
Value | Description | |
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1 | Disabled (used to deactivate a LIU). In this mode, the LIU does not produce an | |
output signal. | ||
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