| 摘要 |
<p>A gateway system prevent an occurrence of a call loss and an inaccessibility of the SG (1) and can effectively utilize communication lines, even if a fault occurs on the MGC side. In the gateway system, a PC is supplied to an SG (1) connected to a plurality of MGCs (2,3), and an occurrence of a call loss and an inaccessibility of the SG (1) can be prevented by incorporating to the SG (1) a function that requires line close operation for an opposed node of the SCN when a fault occurs on the MGC (2,3) which is structured to have no PC.</p> |
