STANDARD 70 - BOOK 6

CARD ACCEPTOR TO ACQUIRER INTERFACE STANDARDS

Data Port Interface

UK Payments Administration (October 2009)

FOREWORD

INTRODUCTION

1 SCOPE

2 NORMATIVE REFERENCES

3 TERMS AND DEFINITIONS

4 SYMBOLS (AND ABBREVIATED TERMS)

5 DATA PORT INTERFACE

5.1 General

5.2 Data port physical interface

5.3 Link set-up and close down

5.3.1 General

5.3.2 Signal handshaking

5.3.3 Link set-up

5.3.4 Close down

5.4 Routing transactions via the data port

6 DATA PORT MESSAGE FORMATS

6.1 General

6.2 Data port message formats

6.3 Data port message flows

6.3.1 General

6.3.2 Transaction detail collection

6.3.3 Confirmation phase

6.3.4 Flow diagrams

6.3.4.1 EPOS provides amount and/or card details and/or transaction type

6.3.4.2 Terminal provides EPOS with all details of result of transaction

6.3.4.3 Card acceptor voids transaction prior to completion

6.3.4.4 Acquirer requires voice referral (1)

6.3.4.5 Acquirer requires voice referral (2)

6.3.4.6 Acquirer requires voice referral (3)

6.3.4.7 Terminal contacts acquirer via EPOS

6.3.4.8 Terminal contacts acquirer via EPOS, terminal detects error or no response

A CODE LISTINGS

A.1 CONFIRMATION FLAG

A.2 EPOS CONFIRMATION REQUEST

A.3 EPOS MESSAGE TYPE

A.4 RESPONSE CODES