We are currently in the process of connecting to the server and due to lack of details in the documentation we are encountering the following issue:
We are opening a connection to the server and the server is replying with a "Welcome Message". The welcome message contains a tag "pwdop" with a 9 digit number as a value. A response is expected to this message to complete authentication and in this response a tag "pdwres" is expected to contain a response to the number sent. We are assuming that the response is probably the server password encrypted using the 9 digit number sent. If this is the case we need to know the type of encryption to be used since it's not specified, if it's not a form of encryption we need to know what the response should be generated.
Once we get the authentication going we should be able to deduce the commands accepted and the replies sent by the server however if more detailed documentation than what we received is available it would be helpful.