SIP2 (Session Initiation Protocol) is a protocol for communication between devices.
In the context of Koha SIP2 is used for communication between Self Check (SC) machines i.e. self checkout machines, and the Automated Circulation System (also known as ACS which in this case is the server running Koha).
SIP2 communications consist of requests and responses.
The self checkout machines are ‘dumb’ and so they send requests to the Koha server which runs logic which determines a particular outcome which is sent as a response message back to the client self checkout machine, and this is then conveyed to the user.
Security notice regarding using SIP2 service: To ensure that your SIP2 traffic is secure as it passes over the internet you need to make sure that you are using a VPN or stunnel.
We could assist you to integrate between your machine/s with Koha ILS. Contact to us for more info via firstname.lastname@example.org.