Analog is an information form that is represented by a
continuous and smoothly varying amplitude or frequency changes over a
certain range such as voice or music. Analog lines allow the
representation of information to closely resemble the original
information signal.
Automated attendant system is a processor control system that performs
telephone console attendant functions such as answering a call,
transferring callers to specific user stations, directing callers to
voice mail, or performing other related call-routing functions without
the assistance of a live attendant. The caller's activation's of these
features occurs through pressing keys that activate DTMF signaling.
Automatic Call Distribution is a system that automatically distributes
incoming telephone to specific telephone sets or stations calls based on
the characteristics of the call. These characteristics can include an
incoming phone number or options selected by a caller using an
interactive voice response (IVR) system. ACD is the process of management
and control of incoming calls so that the calls are distributed evenly to
attendant positions. Calls are served in the approximate order of their
arrival and are routed to service positions as positions become available
for handling calls. Key Telephone System
Centrex is a service offered by a local telephone service provider
that allows the customer to have features that are typically associated
with a private branch exchange (PBX). These features include 3 or 4 digit
dialing, intercom features, distinctive line ringing for inside and
outside lines, voice mail waiting indication and others. Centrex services
are provided by the central office switching facilities in the telephone
network.
Direct Inward Dial dials a number to reach a specific person or
department. This call would only ring at the specified phone.
A FractionalT-1 is a digital transmission service that provides a
customer with multiple 64 kbps channels but less than the full 24
channels offered by a T-1 channel.
A Hybrid Key System is a key telephone system (KTS) that combine some
of the advanced features of PBX systems with traditional KTS features. An
example of a hybrid key system is the ability to assign different
telephone lines to each electronic telephone without the need to rewire
the switching system.
Integrated Services Digital Network refers to a completely digital
telephone network in which voice and high speed data can be transmitted
simultaneously.
A Key Service Unit is the central operating unit of a key telephone
system (KTS) or non-PBX/ACD telephone system (small customer premises
telephone switch).
A key set is a multi-line telephone instrument, also known as a voice
terminal. This is a basic business phone. While this device looks the
same as a home phone, the two are not interchangeable and won’t
work if substituted for each other.
Key telephone systems are (usually small) multi-line private telephone
network that allows each key telephone station to select one of several
telephone lines, place a line on hold, and call via an intercom circuit
between key telephones. Key systems contain a central key service unit
(KSU) that coordinates status lights and lines to key telephones ("Key
Sets").Newer KTS systems typically use only 4 wires to connect the
electronic KSU to each electronic key telephone set, and are often called
"skinny wire" key systems. Modern electronic key systems are small
microprocessor controlled switching systems and have some of the same
advanced call processing features such as call hold, busy status,
multi-line conference, abbreviated dialing, and station-to-station
intercom that are available in a larger PBX.
Multiple Distribution Frame is the wire connection point (wire rack)
that is located at or near the central switching that is the point where
all local access loops are terminated. The MDF connects cable pairs to
the line.
Private Branch Exchange is a switch used inside a private business as
opposed to one serving the general public. PBX systems contain small
switches and advanced call processing features such as speed dialing,
call transfer, and voice mail. PBX systems connect local telephones
("stations") with each other and to the public switched telephone network
(PSTN). Most systems require dialing 9 to get an outside line.
The outlet where a phone or CO (central office) line can be plugged.
Plain Old Telephone service refers to a single analog line telephone
network. This system has transmission rates up to 52 kbps. POTS networks
are also called public switched telephone networks (PSTNs).
Primary Rate Interface is the trunk interface to the mobility server
where the voice channels are separate from the data channel.
Public switched telephone networks are communication systems that are
available for public to allow users to interconnect communication
devices. Public telephone networks within countries and regions are
standard integrated systems of transmission and switching facilities,
signaling processors, and associated operations support systems that
allow communication devices to communicate with each other when they
operate.
Session Initiation Protocol is a signaling protocol for Internet
conferencing, telephony, presence, events notification and instant
messaging.
A T-1 is the digital primary rate telephone multiplexing system that
combines 24 channels of digitally coded speech or other subscriber data,
at 64 kb/s for each such channel, with an 8 kb/s synchronization bit
stream (the framing bits or F bits) into a 1.544 Mb/s bit stream.
Voicemail/Unified Messaging Server provides call management services
that allow the storage, retrieval and redirecting of voice messages
through voice and email communications. Centrex
Voip is the routing of voice conversations over the Internet or any
other IP network. The voice data flows over a general-purpose
packet-switched network, instead of the traditional dedicated,
circuit-switched voice transmission lines. Protocols used to carry voice
signals over the IP network are commonly referred to as Voice over IP or
VoIP protocols. Voice over IP traffic may be deployed on any IP network,
including ones lacking an Internet connection, for instance on a private
building-wide LAN.
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