0 9 8 7 6 5 4 3 2 1
NSF, NSC, NSS:
NSF, NSC, NSS are nonstandard unit frames. The first three bytes of the FIF are specified by T.30.
Thesubsequentdigitsareindividuallydeterminedbythemanufacturers.Therstbytereferstothe
countrycode.Thesecondbyteisaspare;itis00(hex)presently.Thethirdbyteisthemanufacturer
code.
TxFrame RxFrame D A T A
NSF 20 00 00 45 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
The third byte is the manufactures code
Thesecondbyteisspare;currentlysetat00H
The first byte indicates the country code
Indicates the NSF code
CSI, CIG, TSI:
CSI, CIG, TSI is composed of a maximum 20-digit number comprising the country code, area code,
and subscriber’s telephone number. In the printed results, printing starts from the least significant digit
ofthetelephonenumber.Thefollowingcodetableliststhecodesusedtomakethe20-digitnumber
andtheirvalue.BelowthecodetableisaCSIexample.
Code Value Code Value Code Value Code Value
20 Space 32 2 35 5 38 8
30 0 33 3 36 6 39 9
31 1 34 4 37 7 2B +
An example telephone number of 123-456-7890 is represented as:
TxFrame RxFrame D A T A
CIS 30 39 38 37 36 35 34 33 32 31 20 20 20 20 20 20
20 20 20 20 20
DIS, DTC, DCS:
DIS,DTC,DCSframesdenethestandardCCITTcapabilitiesofthetwounitssuchastransmitand
receivespeeds,codingmethods,printerspeed,etc.
TxFrame RxFrame D A T A
DIS 00 EF F9 C4 80 81 80 00
Thebitsareinthefollowingorder:
( 8 7 6 5 4 3 2 1) (16 15 14 13 12 11 10 9) (24 23 22 21 20 19 18 17)
(32 31 30 29 28 27 26 25) (40 39 38 37 36 35 34 33) (48 47 46 45 44 43 42 41)
(56 55 54 53 52 51 50 49) (64 63 62 61 60 59 58 57)
Table for hexadecimal digit to binary number:
Hex Binary Hex Binary Hex Binary Hex Binary
0 0000 4 0100 8 1000 C 1100
1 0001 5 0101 9 1001 D 1101
2 0010 6 0110 A 1010 E 1110
3 0011 7 0111 B 1011 F 1111
Sointheabovelisttherst"EF"is"11101111"(bitorder87654321)
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