Instruction manual

OVERVIEW
● Pooled Facility-Dial/Direct Access allows both multiline and single-line voice terminal
users to access a common pool of trunks for outgoing calls by dialing a facility
access code, or, on multiline voice terminals, by pressing a button. This grouping
provides resource pooling, which results in better service with a given number of
trunks.
● Personal Lines provide dedicated outside lines for multiline voice terminal users.
Personal lines are accessed via a dedicated feature button. Up to 16 terminals may
share a personal line.
● Third-Party Call Setup allows PCs to set up calls between a System 25 voice/data
terminal and any other facility. A PC application program could use this capability to
retrieve information from a data base.
Last Number Dialed, Repertory Dialing, and Speed Dialing are also applicable to dialing and
managing internal calls. Personal lines provide both incoming and outgoing service.
Internal Call Movement
Typically, about 40 percent of PBX calls are internal calls, call transfers to another location,
conference of multiple locations, temporarily suspended calls, page to locate the called party,
etc. Rapid placement of internal calls and easy call movement from the answering station to
a new station are supported with numerous features in System 25.
To provide easy internal call setup, System 25 provides the following features.
● Direct Station Selection (DSS) allows one-button access from a multiline voice
terminal to another voice terminal, a pooled facility, paging zone, or DGC group. The
DSS status LED reflects the idle/busy status of the associated termination point.
This feature is used to track and contact frequently called associates.
● Automatic Intercom allows multiline voice terminal users to call each other by use of
a dedicated line appearance. A private dedicated path ensures that a path is always
available. This feature is frequently used in Boss/Secretary arrangements.
● The Dial Plan for System 25 is based on the concept that, whenever possible, calls
should be placed to individuals rather than to pieces of equipment. To implement
this concept, individuals are assigned PDCs and are allowed to sign in those PDCs at
other terminals. The system automatically routes the call to the home terminal or
signed-into terminal. This significantly increases the probability of reaching the called
party. In addition, the Dial Plan is built on a flexible numbering scheme that allows
the number of dialed digits to match assigned PDCs (2/3/4 digit dial plans) and to be
administered to match telephone company assigned Direct Inward Dialing numbers.
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