KOBIL Smart Card Terminal Manual
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10 Application Commands
All commands issued to the card terminal require the structure of the CT-API that
was specified for the public German healthcare system. The application commands
subdivide into commands for card terminals (CT) and commands for smart cards
(ICC). The CT commands are characterized by the fact that the destination address
(DAD) is set to the value ‘01.’ The ICC application commands have the destination
address ‘00’, provided a smart card is inserted in contact unit 1.
In the case of card terminals having several switching options, the non-
communicating interfaces are deactivated by sending a command.
10.1 CT Application Commands
The syntax of the commands and the responses complies with ISO 7816-4. The
commands also support the expanded file format. The command structure, as well as
the response structure, are represented in the two following tables:
Header (mandatory)
Body (optional)
CLA
INS
P1
P2
Lc
Data
Le
Command
class
Command Parameter 1 Parameter 2 Command length Data
Expected length of response
Table 23: Command Structure
Body (optional)
Trailer (mandatory)
Data SW1 SW2
Data
Status byte 1
Status byte 2
Table 24: Response Structure
