The POSH service offers interesting usage models both for merchants with simple Web shops and for companies with elaborate shop systems.
Using you web browser, you can initiate transactions manually. This variant is important for you if you accept orders via mail, fax and phone. As an Internet merchant, use this option if you want to start easily and intend to process a few transactions without any shop integration effort. You decide how much automation of payment processing is desired. Integration of the POSH service can done step by step. Start with automatic authorizations, and integrate capture, reversal and refund management later when the transaction volume warrants it.
Systems without a permanent online connection may collect transaction requests in a local file and submit this once a day to the POSH service for processing.
With a test account, you get access to the technical documentation of the POSH service.