Instruction manual

OVERVIEW
be used to set up connections between data terminals, word processors, personal
computers, and host computers. System 25 uses intelligent port circuits equipped with
distributed network processor elements to provide (essentially) nonblocking voice and data
switching.
Voice communications features combine traditional telephone features, such as Transfer and
Hold, with advanced features, such as Individual and Group Coverage, Hands-Free Answer
On Intercom, and Speed Dialing (see Section 2, “Features and Services”).
Data communications features provide switched data connections supporting transmission of
voice and data over Premises Distribution System wiring. Data connections can be made
between two digital data modules (asynchronous data units), between two analog modems,
or between an analog modem and a digital data module. System 25 also provides access to
STARLAN NETWORKS (Release 2 of STARLAN only). The system has data modules that
provide a RS-232 interface for full duplex, asynchronous, transmission of data up to 19,200
bps, and an integrated 212A-compatible modem pool resource.
System 25’s Integrated Solution offers customers a unique package of integrated call
management, switch management, and office automation applications. The Integrated
Solution is a set of application programs that run on a Master Controller (UNIX® PC). The
applications include Advanced Administration Software (AAS), which permits customers to
administer System 25’s features themselves;
Call Accounting System (CAS); and an
integrated Voice Message System (VMS) that provides call coverage, leave word calling,
automated attendant, and voice mail services.
In addition, a number of generic office
automation applications (word processing, data base management, and spreadsheet) are
also available for the Integrated Solution; these applications may be run simultaneously with
the VMS and CAS applications.
System 25 supports the following:
● Trunk and Network Facilities—Dual Tone Multifrequency (DTMF) and Dial Pulse
Signaling on incoming and outgoing trunks (dial pulse only on DID trunks).
— Loop Start (LS)
— Ground Start (GS) (Strongly Preferred over Loop Start in most installations)
— Tie Trunks (Type I and Type I Compatible E&M, Type V Simplex)
— Direct Inward Dialing (DID)
● Voice Terminals —
Single-Line Touch-Tone, Single-Line Rotary, MET, 7300H Series
Multiline, and ATL Corded and Cordless telephone sets.
● Data Facilities
— Digital Data End Points — RS-232 Interfaces via Asynchronous Data Units
— Analog Data End Points — Tip/Ring-Type Modem Interfaces
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