Mitel Inter-Tel 5000, Руководство по установке и обслуживанию

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Chapter 3: Product Description
Single-Line Adapter
Page 3-10
Inter-Tel
®
5000 Installation Manual – Issue 2.4, May 2008
Single-Line Adapter
A Single-Line Adapter (SLA), which can be installed on an available DEM-16 circuit, is used for
connecting two AC-ringing, single line DTMF or pulse-tone sets, playback devices, and/or off-
premises extensions.
With a system installed in the United States, an SLA can also be used for connecting two Direct
Inward Dialing (DID) trunks—or, one single line endpoint and one DID trunk. For more
information on using DID trunks, refer to the
Inter-Tel 5000 Features and Programming Guide
(part no. 580.8006). SLAs are shipped with both ports set for single line device operation.
Before connecting a DID trunk, be sure to open the unit and set the corresponding port for DID
operation. Also, if necessary, adjust the hybrid balance setting to better accommodate longer
loop lengths. For installation instructions, see the
Installation chapter.
AC-ringing off-premises extensions can be connected directly to the SLA circuit. External high-
voltage ringing adapter (HVRA) units, power supplies, and ring generators are
not needed.
Each SLA, whether used for single line sets or DID trunks or both, is powered by its own AC
transformer. Also, SLAs have two self-correcting thermistors. If a short circuit causes a
thermistor to open, it will automatically close when the short is removed.
Data Port Modules
The Personal Computer Data Port Module (PCDPM) and Modem Data Port Module (MDPM)
are connected to appropriate digital endpoints to provide hard-wire paths necessary to connect
Digital Station Select (DSS)/Busy Lamp Field (BLF) units. Contrary to their names, however,
neither device supports serial data.
Personal Computer Data Port Module
The PCDPM can be installed on Standard, Associate, Executive, and Professional Display
endpoints or on Models 8520 or 8560 endpoints to gain Off-Hook Voice Announce (OVHA)
receive capability or to install an optional Modem Data Port Module (MDPM).
IMPORTANT
SLAs do not support visual Message Waiting applications. If single line sets
with Message Waiting lamps are installed on SLAs, the lamps will not
function. However, single line sets can be configured in DB Programming to
receive audible Message Waiting tones.
NOTICE
Possible system degradation . For optimal system performance, do not use SLA circuits for
Voice Mail and Automated Attendant functions. Rather, the Voice Processing PC and
applications software should be used for these purposes.
NOTE
The PCDPM supports audio only when used in conjunction with the Inter-Tel 5000
DEI product. In this version of software, the serial port is not functional on the
PCDPM, and it does not transmit data, even though the name of the device
suggests that it does.