There is already a PBX system in place here, which is used in conjunction with Swyx.

The goal is to ensure that all internal users are assigned phone numbers of equal length from the same number range, regardless of whether they are connected to a traditional private branch exchange (PBX) or use Swyx for their calls. Moreover, all users should be able to dial an external line using the same procedure (e.g. "0" for public line access, followed by the destination number in the public network). For more details on the configuration of the SwyxGate settings mentioned below and on the configuration of its lines, please read The "ISDN Ports" Tab.

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 made by Swyx users C, D, and E to the public network are first routed 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.

SwyxGate is connected via one line to the traditional private branch exchange (PBX) and to the public network with a second line.

This scenario is useful when migrating older PBX systems to Swyx, as it increases the availability of outside lines for Swyx users without having to expand the existing PBX with additional modules.

A SwyxGate is installed between the public network (PSTN) and the private branch exchange (PBX):

Detailed information concerning the configuration of SwyxServer can be found in App. D: Internal connections (BRI/PRI). For information on the configuration of ISDN cards for an internal S0 connection, please refer to D.1.2 SX2 in NT Mode.