P A R A M E T E R R E F E R E N C E ( T D M 8 8 0 I S P E C I F I C P A R A M E T E R S )
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AT interface
Parametrization of the Alerting Feature:
Table 11
Alerting: AT interface
SDS interface
Parametrization of the Alert functionality over an SDS message requires that the message format presented below
is used.
Table 12
Alerting: SDS interface
DESCRIPTION
COMMAND
RESPONSE
Read Alert Status
+CXALERT?
+CXALERT: <alert in 32
hexadecimal coding>,
(<alert statuses 1=on 0=off,
starting with alert 0,
grouped in 4 alerts>)
Test
+CXALERT=?
-
Note:
OTA supports the configuration of a single alert per message. Configuring multiple alerts requires the
usage of multiple messages.
FIELD
TYPE
Protocol Identifier
0x46
Sub-protocol Identifier
0x5
PDU Type
4 bits : 0011
LIP Enabled and Allowed for all
numbers
4 bits : 0000 = both disabled, 0001 = LIP enabled, 0010 = Allowed from all
numbers, 0011 = Both enabled
Sub block count
8 bits : Number of sub-blocks, single block update supported currently
Sub block ID
8 bits : reserved
Sub block size
8 bits : reserved
Message type
8 bits : 0x0 = No message, 0x01 = SDS-1, 0x02 = SDS-4
Reserved
8 bits
SDS-4 Message length
16 bits : Conditional, see message type.
SDS-4 Protocol ID
8 bits: reserved. 0x00. Conditional, see message type.
SDS-4 Message type
8 bits: 0x03. Conditional, see message type.
SDS-4 Message reference
8 bits: 0x01. Conditional, see message type.
SDS-4 Coding scheme
8 bits: 0x01. Conditional, see message type.
SDS-4 Message
60 chars. Conditional, see message type.
SDS-4 <reserved padding>
16 bits.
Destination address: TETRA
number
32 bits.
Destination address: MCC
16 bits.
Destination address: MNC
16 bits.
Destination address: TETRA
Number Type
8 bits.
Destination address: reserved
fields
24 bits.
SDS-1 status value
16 bits. Conditional, see message type.
Lifetime
16 bits. Alert lifetime in minutes.
Interval
16 bits. 0x001E = Default 30 seconds. Reserved.
Message sending mode
8 bits. 0x00 = one shot, 0x01 = Continous, 0x02 = Until success, 0x03 Requires
acknowledgement
Alert number
8 bits. Number of the alert to configure : 0<n<32
Содержание TDM880i
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