User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Section 6 – Contact EMV Level 2 transaction messages 2015-04-20
Page95
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message T17 Send Online Authorized Code
Format: <STX>T17[OnlineRes]<SUB>[ARC]<SUB>[IAD]<ETX>[LRC]
Message length: Fixed 7 or 16 bytes.
Usage: PIN pad continues to perform the EMV transaction flow after received this online
response from host when the transaction response T16 is ‘A1’ (online authorized
request, see EMV 4.3, book 3, chap 8.2, figure 6 – transaction flow example). PIN pad
will send the message T16 (Start Transaction Response) to host.
Message element:
Field Length Value and description
<STX> 1 <02>
T17 3 Message ID
Online Res 1 ‘0’: Unable to go online
<ETX> 1 <03>
[LRC] 1 Checksum
OR
Field Length Value and description
<STX> 1 <02>
T17 3 Message ID
Online Res 1 ‘1’: Get Online Response,
<SUB> 1 <1A>
ARC 2 Optional, if there is ARC from host.
Authorisation Response code, ASCII
(0~9, A~Z),.
<SUB> 1 <1A>
[IAD]
16~32 Optional, if there is IAD from host.
Issuer Authentication Data , Hex string.
<ETX> 1 <03>
[LRC] 1 Checksum
OR (If the transaction is changed to Magnetic stripe card processing)
Field Length Value and description
<STX> 1 <02>
T17 3 Message ID
Online Res 1 ‘3’: MSR Online Approve
other: MSR Online Decline,
<ETX> 1 <03>
[LRC] 1 Checksum