Beginning with SwyxWare Version 4.0, charging information will also be signaled on the internal BRI/PRI bus. This requires that the ISDN card be operated in NT mode (SX2 in NT Mode). The SwyxServer then generally sends AOC-D information in currency units, regardless of how the charging information was signaled on the external ISDN line.

If a PBX or an ISDN device is in operation, which cannot interpret the AOCD information element, SwyxGate can be reconfigured so that it sends display information elements instead.