Construction of SMS PDU’s
LZT 123 7632 R1A
9
99
1
0
0
1
1
0
0
1
The digits 9 and 9
F9
1
1
1
1 1 0 0 1
The digit 9. Since there are
an odd number of digits in
this SCA then the bits 4-7 in
this octet are fill bits.
We can look in more detail at the Type of Address Octet:
7 6 5 4 3 2 1 0
1
Type-of-number
Numbering-plan-identification
The values for the two fields, Type of number and numbering plan
identification can be chosen according to the table below:
BIT
NUMBER
BIT VALUE
EXPLANATION
7
1 ALWAYS
Fill bit
Type of number:
0 0 0
Unknown
0 0 1
International number
0 1 0
National number
0 1 1
Network specific number
1 0 0
Subscriber number
1 0 1
Alphanumeric, (coded according to
GSM TS 03.38 7-bit default alphabet)
1 1 0
Abbreviated number
6,5,4
1 1 1
Reserved for extension
Numbering-plan-identification:
0 0 0 0
Unknown
0 0 0 1
ISDN/telephone numbering plan
0 0 1 1
Data numbering plan (X.121)
0 1 0 0
Telex numbering plan
3,2,1,0
1 0 0 0
National numbering plan
