The AT&T satellite network control system

The network control systems used by AT&T Business Communications Services and by AT&T International Communications Services are discussed. From the inception of its satellite services, AT&T has supported the concept of centralized monitoring and control (M and C) of its widely dispersed earth stations. Today, the M and C is being handled by the MONARC (monitor and remote controller) in the earth stations, and GSNCS (generic satellite network control system) in the AT&T domestic and international operations centers. The MONARC software allows flexible interface to any equipment; GSNCS provides graphically presented M and C of all earth stations from one central location via voice-grade data lines. By MONARC/GSNCS monitoring the earth stations on a 24-hour basis and being able to initiate event-driven or time-driven operations in response to earth station conditions, AT&T is able to maintain the highest possible network readiness