| 摘要 |
<p>The invention relates to a slave switch having a number of connections (4) for traffic with switch-external users (7), and a number of extensions (6) intended for connection with switch-internal users (5). The slave switch is characterized in that it is constructed to initiate originating calls only, and in that the switch includes by-pass signalling means (14). The invention also relates to a method of communication between the slave switch and a master switch (13).</p> |
