Specifications

CONTENTS
4–1.8
CONFERENCE
The system allows five simultaneous conferences.
ADD-ON (5 PARTY)
Any combination of up to five parties (stations or outside lines) can be joined to-
gether in an add-on conference. Parties may be eliminated or added after a confer-
ence has been established.
UNSUPERVISED
A station user may set up a conference with two or more outside lines and then exit
the conference leaving the outside lines connected in an unsupervised (trunk to
trunk) conference.
COMPUTER TELEPHONY INTEGRATION (CTI)
Computer Telephone Integration (CTI) allows integration between the Prostar DCS
and a personal computer system (PC) or a local area network (LAN). Caller ID
service is required on TAPI and TSAPI inbound call applications that use the CID
information to display computer records in conjunction with the presentation of the
call to the station. TAPI and TSAPI are described below. Both are supported on
DCS release 3.x or higher software.
TAPI
Jointly developed by Intel and Microsoft, TAPI (Telephony Applications Program-
ming Interface) delivers telephony features to the Windows desktop. TAPI is an
open application interface (OAI) protocol that supports First Party Call Control. A
DCS Computer Telephony Module (CTM) is required to connect any keyset to a
personal computer running Windows 3.1 or Windows 95. The number of CTMs
that can be installed on a system is only limited to the number of keyphones. The
features and functionality of the DCS keyset are not changed.
TSAPI
Telephony Services Application Programming Interface (TSAPI) was developed by
Novell and AT&T and is the method of integrating the DCS system to a computer.
TSAPI is a LAN based solution allowing computers to communicate directly to the
telephone system over the network system. This establishes a logical connection
rather than a physical connection between telephone and computer. It eliminates
the cost and administrative overhead of connecting every PC to a desktop phone.
It emphasizes third-party call control. (Example: calls can be tracked as they are
transferred, making it more suited to large office applications). TSAPI can emulate
first-party type call control for the Prostar DCS system, rather than from the tele-
phone as TAPI does. For example, to make a call the DCS rather than the tele-
phone would dial the phone number, and the call would be then transferred to the
telephone. Novell Telephony Services 2.1 or higher specifies the data communica-
tions link between the Novell Netware file server running the Netware Telephony
Services NLM and the Samsung DCS. The physical connection from the Novell