System Capacities And Requirements; Capacities - AT&T MERLIN LEGEND System Reference Manual

System Capacities and
Requirements

Capacities

This chapter details the technical requirements and capacities of the
communications system:
hardware and software capacities for the system
environmental requirements for placement of the control unit
power and grounding requirements for operating the system
The system comes in two sizes, large and small. The large system supports up
to 80 outside lines/trunks and 144 stations, such as telephones and fax
machines, and the small system supports up to 24 outside lines/trunks and 56
stations. The size of the system is determined by its memory capacity - that is,
the processor module (including the feature module) located in the control unit.
The large system has a total capacity of 224 jacks (80 outside lines/trunks plus
144 stations); however, each MLX module station jack supports two logical
endpoints (station devices that can operate simultaneously and independently).
For example, an MLX telephone with a Multi-Function Module (MFM) plugs into
only one station jack, but the jack supports the telephone and the equipment
connected to the MFM (such as a fax machine or an answering machine).
In a similar way, although the 100D module has only one jack, it can serve up to
24 endpoints (emulated lines/trunks or ISDN-PRI lines/trunks).
Thus, the entire large system can be configured to connect up to 80 lines/trunks
and 255 station endpoints, a total of 335 endpoints.
Note: The system has a time-slot capacity of 216. If more than 216 endpoints
are in use at the same time, blocking can occur.
The following table lists the hardware and software capacities of the system.
Capacities 6-1