V-Link Technical Overview

By: Sektor Payments  06-Dec-2011

If you are a POS application developer wanting to integrate your POS application with a VeriFone terminal then you have a number of options available to you. If you want to create an


EFTPOS solution then you will want to use the

V-Link Software Development Kit

. If you would like to create an integrated EFTPOS solution then you will want to use the

Vault Software Development Kit

. The choice of




solution will depend on the features required by merchant and/or supported by the POS application. The table below shows the features supported by each method.

 Feature V-Link Vault

 1-Way Operation (start transaction with amount)

 2-Way Operation (terminal responds with transaction result) YES YES
 Supported Financial Transactions Purchase,
Purchase Plus Cash,
Cash Out, Refund
Purchase Plus Cash,
Cash Out, Refund
 Supported Administration Functions Logon, Settlement, Reprint Receipt All functions supported by terminal
 Printing via POS Printer YES YES
 Operator dialogs appear on POS screen - YES
 Electronic Cash Register Support YES -
 Legacy Protocol Support YES -
 TCP/IP Support From Q3 2010 YES
 Serial Support YES YES


V-Link is the method used to create


EFTPOS solutions using VeriFone terminals. The

 page is a good place to start reading if you want to integrate your POS application using V-Link.


Vault is an EFTPOS Integration product that allows your POS application to be fully integrated into an EFTPOS solution. Vault is still under development and is due to be available from late 2010.

Other products and services from Sektor Payments


WiFi Access Point

The ZyXEL WAP3205 WiFi Access Point offers a cost effective means of reliably connecting your VeriFone Vx670 WiFi terminal. Removable aerials, which can be replaced with specialised aerials for even more comprensive coverage in those tricky areas. Easy configuration process and the ability to save a standard configuration. Dual aerial and high output signal strength for longer range.


Countertop Solutions

A one piece terminal with a two piece terminal feel, this interface capable terminal has the ability to transact via Dial or Ethernet IP on the Paymark or ENZ networks to best meet your specific needs. The VeriFone Vx810 Duet terminal is the ideal countertop solutions for all your fixed location payment requirements. Two Piece Counter Top Terminaloperating Paymark & ENZ Software. Paper Roll 57mm x 47mm.


Mobile Solutions

For business going places the VeriFone Vx670 terminal is the ideal localised wireless WiFi solution for all your mobile payment requirements. For business going places the VeriFone Vx670 terminal is the ideal wireless GPRS solution for all your mobile payment requirements. Debit & Credit Card Processing. Paper Roll 57mm x 38mm.


Interfaced and Integrated Solutions

Easy to implement in both small and large environments, selecting an interface for POS integration is dependent on the features required by the merchant and the functionality supported by the POS or ECR application. By writing the application only once, POS vendors can offer merchants interfaced payment processing solutions that provide multiple choices of functionality and VeriFone hardware devices.


V-Link Overview

If you do not support a legacy protocol or you wish to support a protocol with more features then the VX-Link protocol will probably be the best choice. Gen-Link: This is not strictly a single protocol but Gen-Link is able to interpret legacy one-way protocols. VL-Link: This is a simple protocol designed for simple POS applications and ECRs. Standard Financial Functions (purchase, purchase plus cash, refund, cash out.