Annex B: Transportation of APDU messages by T=1

ISO 7816 Part 4: Interindustry Commands for Interchange

ISO 7816 part 4, section..1 2 3 4 5 6 7 8 9 annex.. A B C D E F

For the latest version of ISO7816 part 4, please contact ISO in Switzerland.

Annex B: Transportation of APDU messages by T=1

Annex B.1 Case 1
Annex B.2 Case 2 (short and extended)
Annex B.3 Case 3 (short and extended)
Annex B.4 Case 4 (short and extended)

Annex B.1 Case 1

The command APDU is mapped onto the information field of an I-block without any change.

The information field of the I-block received in response is mapped onto the response APDU without any change.

Annex B.2 Case 2 (short and extended)

The command is mapped into the information field of an I-block without any change.

The response APDU consists of

• either the information field of the I-block received in response,
• or the concatenation of the information fields of successive I-blocks received in response. These blocks shall be chained.

Either information field

or concatenation of information fields

Annex B.3 Case 3 (short and extended)

The command APDU is mapped without any change onto

• either the information field of one I-block,
• or the concatenation field of the information fields of successive I-blocks which shall be chained.

Either information field

or concatenation of information fields

The information field of the I-block received in response is mapped onto the response APDU without any change.

Annex B.4 Case 4 (short and extended)

The command APDU is mapped without any change onto

• either the information field of one I-block,
• or the concatenation of the information fields of successive I-blocks which shall be chained

Either information field

or concatenation of information fields

• either the information field of one I-block received in response,
• or the concatenation of the information fields of successive I-blocks received in response. These blocks shall be chained.

or concatenation of information fields