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Micropayment methods of payment

Instructions on integrating the various payment methods, parameter transfer and URL protection

Documentation - Description of the URL and the parameters for all payment methods


API Call2Pay - Event

Web service for payment of fixed amounts by phone

Version 2.1 - Duration of mobile phone connection
Version 2.0 - Support for multiple calls
Version 1.0
Reference demo (simplified) [PHP] - Demonstration of the basic functionality
Reference demo (shop) [PHP] - Demo shop with user administration
Demo application in PHP


API Call2Pay - Time

Web service for payment by phone with time-controlled invoicing

Version 1.0
Demo application in PHP - Example of a pay-per-view solution
Donate demo in PHP - Example of a donation solution for small amounts


API Securepin

Web service for user identification by phone

Version 2.0
Demo application in PHP - Example of a Securepin solution


API Direct debit

Web service for payment by direct debit

Version 1.6 - SEPA debits with IBAN and BIC
 Reference 
Version 1.4 - extends refunds
 Reference 
Version 1.3 - extends external transactions
 Reference 
Version 1.2 - extends supplementary payment for cancelled sessions
 Reference 
Version 1.1 - extends address and contact data for customer
 Reference 
Demo application in PHP - Demo shop with user administration and coin-based credit administration
Reference demo (simplified) [PHP] - Demonstration of the basic functionality
Reference demo (shop) [PHP] - Demo shop with user administration


API CreditCard

Web service for payment by credit card

API/terminal error codes - Overview of possible error codes from both the API and the terminal
 Reference 
Hybrid mode/Web2API - Hybrid mode combines the advantages of our web solution with the flexibility of the API solution (CreditCard payment dialog)
Updates/Change log - If you have used an older version of the API up to now you will find an overview of the innovations in the change log
Archive of preceding versions - If you have used an older version of the API up to now you will find links to references for all versions here
Version 1.5 - AddressVerificationSystem (optional); additional test methods for the new notifications (Backpay, Refund, Credit)
 Reference 


API Prepay

Web service for payment in advance/by bank transfer

Version 1.0
 Reference 
Demo application in PHP - Demo application with live documentation


Micropayment service client (PHP)

PHP library which simplifies access to micropayment web services The corresponding service interface must be additionally installed for each API. That can be found under the corresponding short reference.

Version 1.17


Description of the NVP protocol

If you cannot or do not wish to use the service client as it requires PHP, we can only refer you to the description of the NVP protocol so that you can develop your own implementation for your server-side language/environment (ASP/ASP.net, Java, Perl, Python, etc.).

Version 1.0