decode SMS-SUBMIT

079144872000626011000C914477000910320011002154747A0E4ACF416190BD2CCF83E6E9369C5D06B5CBF379F85C06E95A29

-0791448720006260 : SMSC

--07 : Length(Hex)

---Number :

91448720006260

91 : International ( + )

448720006260

Reverse 2digits from left

number is ... 44 78 02 00 26 06

-11 : PDU Type

--00010001

bit0,1(from right) : 01 : MTI

SMS-SUBMIT :01 & DELIVER : 00

bit2 : 0 : RD ( Reject duplicate )

bit3,4 : 10 : VPF : present

bit5 : 0 : SRR

bit6: 0 : UDHI : not present ( for concatenated messages or multi part)

bit7 : 0 : RP ( Reply path )

-00 : MR ( Message refrence in hex )

-0C91447700091032 : DA (send To this)

--0C : Length in hex

C=0×16+12=12

---Number

91 : International ( + )

447700091032

Reverse 2digits from the left

number is ... 44 77 00 90 01 23

-00 : PID

-11 : DCS ( Data coding scheme )

Alphabet 7bit

--Group coding

General data coding

11 GSM 7BIT CLASS 1 (ME-specific)

-00 : VPF ( Ckeck bit3,4 of PDU Type [10] ,it means present)

-21 : UDL in hex

-54747A0E4ACF416190BD2CCF83E6E9369C5D06B5CBF379F85C06E95A29 : UD

---Decoding User Data ( UD )

Data coding is ... alphabet mode 

54747A0E4ACF416190BD2CCF8

3E6E9369C5D06B5CBF379F85C06

E95A29

-Reverse above Hex 

29 5A E9 06 5C F8 79 F3 CB B5 06 

5D 9C 36 E9 E6 83 CF 2C BD 90 61

41 CF 4A 0E 7A 74 54

-Hex to binary

00101001 01011010 11101001

00000110 01011100 11111000

01111001 11110011 11001011

10110101 00000110 01011101

10011100 00110110 11101001

11100110 10000011 11001111

00101100 10111101 10010000

01100001 01000001 11001111

01001010 00001110 01111010

01110100 01010100

Hex_Count (2digits)=29

How many zeros to be remove? ( from the left of binery [Octet])

29×8-int(29×8/7)×7=1

Remove 1 Zero from the left then Set to septet (7bit) All binaries

0101001 0101101 0111010

0100000 1100101 1100111

1100001 1110011 1110011

1100101 1101101 0100000

1100101 1101100 1110000

1101101 1101001 1110011

0100000 1111001 1110010

1100101 1110110 0100000

1100001 0100000 1110011

1101001 010 0000 1110011

1101001 1101000  1010100

-Binary to hex

Ex : 010 1001:010=2,1001:9

29 2D 3A 20 65 67 61 73 73

65 6D 20 65 6C 70 6D 69 73

20 79 72 65 76 20 61 20 73

69 20 73 69 68 54

-Reverse hex 

546869732069732061207665727920

73696D706C65206D65737361676520

3A2D29

Hex_Count=33

33 >>> 33÷16=2 Reminder=1>>21

21... is the actual length of UDL

-Put hex here

https://codebeautify.org/hex-string-converter

Finally decoded done successfully!!!

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