Although "connections" is exactly what the Swedish says, I think what the Swedish means is something like "connection types". For example, the procedures for sending direct payments are very similar to, but not identical with those for invoice payments. In technical terms, they use different protocols -- the rules for communicating, rather as we use HTTP or FTP or TELNET, different types of connections all using the same underlying connection, namely TCP/IP. That might be too technical for your context, so I would be tempted to use "connection types".