10 System architecture

Peripherals

Peripheral equipment provides the analog and digital interfaces for all
peripheral devices, and performs analog to digital conversion of all input
signals before switching is performed by the Network. Additionally,
Peripheral equipment circuits provide the supervisory and transmission
functions needed for trunks connected to the external telecommunications
network.
Meridian 1 systems use a star topology for connecting peripheral devices to
the switching equipment, an approach which permits uniform distributed
wiring methods. This approach provides significant benefits in the area of
administration, installation, maintenance and reliability.
Figure 1
Meridian 1 modular architecture
Control Switching
Network
Circuits
Peripherals
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Software architecture
The adaptability of software control provides a complete array of services
and features tailored to meet changing requirements.
Call processing, maintenance and administration of Meridian 1 systems are
controlled by software programs stored either as firmware programs, as
software programs resident in system memory, or as non-resident programs
on disk. The information which describes system configuration and
associated peripheral equipment is termed office data. This data resides in
the system memory and on disk.
System overview 553-3001-I 00
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