Mitel SX-2000 - Manual (Page 191)

Feature Description
50003510 Revision A 177
The MILINK data module is positioned beside or under the user’s SUPERSET 410, SUPERSET
420, or SUPERSET 430 telephone, and connects to a modular jack located on the base of the
telephone. The RS-232 device connects to a DB-25 pin connector on the MILINK data module.
A 9 Vac wall-mount power supply provides power to the MILINK data module.
MITEL Application Interface (MAI)
The MITEL Application Interface (MAI) software package allows MITEL computer-based
applications to access the system features. MAI is used in conjunction with an external host
computer connected via an RS-232 link to a DATASET 2100 device. The DATASET device is
connected to a DNIC port on the system via a single twisted pair.
MITEL Network Gateway
The MITEL Network Gateway provides SX-200 systems with Primary Rate Access (PRA) to
the ISDN service provider. By interfacing the SX-200 switch with the ISDN service provider, it
allows SX-200 users to access ISDN services, such as Direct Dial In (DDI), Calling Line
Identification (CLID), and Call By Call Service Selection (CBC).
You must purchase ISDN services from the ISDN service provider. In addition, you must
purchase software options from Mitel Networks Corporation that are related to the desired ISDN
services. You install these software options on the Network Gateway to permit the ISDN service
provider service to interface with the SX-200 system.
The cabinet that holds the MITEL Network Gateway hardware is similar in construction to a
Personal Computer (PC) tower cabinet. The Network Gateway consists of an IBM-compatible
motherboard with one Application Fiber Controller (AFC) card and up to four Primary Rate
Interface (PRI) cards. The AFC card connects to a Fiber Interface Module (FIM) on the SX-200
system via fiber optic cable; the PRI cards interface to the ISDN service provider over one or
two T1 trunks. To the SX-200 system, the AFC card appears like a T1 card in a peripheral node
running T1/D4 protocol; to the ISDN service provider, the PRI card simulates an ISDN switch.
In simple terms, the Network Gateway accepts call request, progress, and termination
messages from the SX-200 system and converts them into ISDN messages for the network
and vice-versa.
The Network Gateway supports the following ISDN network services:
• Calling Line Identification (CLID) - If this service is purchased from the ISDN service
provider, the ISDN network presents the telephone number of the calling party to the
Network Gateway.
• Calling Line Identification Restriction (CLIR) - This feature allows users to prevent their
telephone number from being presented to the called party.
• Direct Dial-In (DDI) - If this service is purchased from the ISDN service provider, the ISDN
network presents the dialed number of incoming calls to the Network Gateway.
• Call-By-Call Service Selection (CBC) - This feature allows telephone users to select the
ISDN network services that they wish to use on a per call basis.