PRACTICE 297-2011-201
1. INTRODUCTION
GENERAL
DESCRIPTION 1.01 The Business Set is designed for direct connection, through a
non-loaded subscriber loop pair, to the Northern Telecom DMS-250,
DMS-100, or Meridian SL-100 Digital Switching systems.
1.02 The M5009 Basic Business Set is loop powered and will work
with a maximum loop length of 4,572 m (15,000 ft) of 26 AWG
standard twisted pair telephone wires, subject to Line Engineering rules
(297-2011-180).
1.03 The service provided by the Business Set substitutes low-level
signals passed over a half-duplex, above-voiceband signaling channel
for the traditional loop signaling (dial pulse) or inband tone signaling
(DTMF tones) on a conventional subscriber loop. In addition to
signaling and supervision, messages on the above-voiceband signaling
channel include signals for implementing the many special features
available on the Business Set.
1.04 The M5009 Business Set offers a choice of selected key and
system features; it has 3 fixed keys, a dial pad consisting of 12 fixed
keys, 8 programmable feature and/or directory number keys with LCD
indicators, 1 programmable feature key without an LCD indicator (key #
9, in topmost position) and is equipped with a speaker for alerting
tones, on-hook dialing and intercom.
PHYSICAL
CHARACTERISTICS 1.05 Fig. 1-1 shows the dimensions and main components of the
Meridian M5009 Business Set. The set comes in three different colors:
(a) Chameleon-grey (NT4X35AA, NT4X35CA, NT4X35EA)
(b) BTS light-grey (NT4X35BA, NT4X35DA, NT4X35FA)
(c) Black (NT4X35GA, NT4X35HA, NT4X35JA)
OTHER
DOCUMENTATION 1.06 Other information pertaining to Business Sets can be found in
the following documents:
297-2001-100 Integrated Business Network (IBN) - Description
297-1001-114 Operational Measurements (OM)
297-1001-250 Testing and Acceptance for Initial Installation
297-1001-310 Table Editors User Guide
297-1001-518 Operational Measurements - Man-Machine
Interface
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