| 摘要 |
<p>In telecommunications system comprising a network of interconnected telephone exchanges, a number of adapters provide at least some of the telephone exchanges with a means of communication of traffic via a number of cross-connects, e.g. ATM cross-connects. Control of traffic flow between the adapters and the telephone exchanges is implemented according to ISDN User Part (ISUP) protocol, National User Part (NUP) protocol or Q.50 protocol. <IMAGE></p> |
