HUAWEI UMTS M2M Module V100R001
AT Command Interface Specification
Issue 18 (2009-06-22)
Commercial in Confidence
Page 78 of 169
1 Settings are available. It indicates that the reply has the SC number settings
identical with those of the message, and the return path is the same.
<UDHI>: Indicates the user data header. The values are as follows:
0 The user data segment contains only contents of the message.
1 In addition to the message, the user data segment contains a data header.
<SRR>: State report request indication
0 State report information about successful sending of a message is not required.
1 State report information about successful sending of a message is required.
<MR>: Message ID. Value range: 0~255.
<DA>: DA (destination address), same as defined in SCA. There are a total of
2~12Otects. Therefore, the longest address in the DA segment contains 20 digits.
<PID>: Protocol indication. The values are as follows:
PID
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Bit7 bit6 (here we assume bit 7 = 0 and bit 6 = 0)
0 0
Allocate bits 0..5. The values are defined below.
1 0
Allocate bits 0..5. The values are defined below.
0 1 Reserved.
1 1
Allocate bits 0..5, for special purpose of SC.
The values of Bit5 are as follows:
0 no interworking, but SME-to-SME protocol
1 telematic interworking (in this case, the values of bits 4...0 are valid)
Bit4...bit0 telematic devices type indication:
If the values are 1 0 0 1 0, it indicates Email. Other values are not supported currently.
<DCS>: Coding mode of user data. The values are as follows:
Bit7…bit4
Bit3…..bit0
0: Message is not
compressed
Bit5
1: Message is
compressed. Not
supported currently.
00xx
Bit4
0: Bit1 and bit0 are
reserved
Bit1 bit0 indicate message type
0 0
: Class 0, providing display and reply to the SC
that the message is received but not stored.
0 1
: Class 1, stored to the NV (or SIM card if the
NV is full)
1 0 : Class 2, for use of SIM only. After the
message is stored, the storage state will be replied to the
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