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2 liu control request – Dialogic DSI SPCI Network Interface Boards User Manual

Page 57

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Dialogic

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DSI SPCI Network Interface Boards Programmer's Manual Issue 5

57

6.3.2

LIU Control Request

Synopsis:
Message sent by the application to dynamically control operation for a Line
Interface Unit (LIU). Allows setting of outgoing alarms and diagnostic

loopbacks.

Message Format:

MESSAGE HEADER

Field Name

Meaning

type

LIU_MSG_CONTROL (0x7e35)

id

liu_id

src

Sending Module ID

dst

MVD_TASK_ID (0x10)

rsp_req

used to request a confirmation

hclass

0

status

Status Response (if confirmation requested)

err_info

0

len

16

PARAMETER AREA

Offset Size

Name

0 1 ais_gen

1 1 rai_gen

2 1 loop_mode

3

13

Reserved for future use, must be set to zero.

Description:
This message is sent to the DSI SPCI Board to perform dynamic changes to

the operation of the Line Interface Unit. It allows the user to control
generation of AIS (Blue alarm) and RAI (Yellow alarm) and to activate various
diagnostic loopback modes.

The confirmation message (if requested) indicates success by status of zero.

Parameter Description:

ais_gen
The mode used to generate the Alarm Indication Signal (Blue Alarm) taken

from the following table: