SwyxGate is connected to the traditional private branch exchange (PBX) using one line. Calls to A and B will be put through directly by the PBX. Calls from the public telephone network to C, D and E are forwarded to SwyxServer by the PBX and delivered from there. Calls from the SwyxWare users C, D and E into the public network are first forwarded to the PBX. The PBX then forwards these calls to the public network. Internal calls between A or B and C, D or E stay within the company.