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142 TalkSwitch User Manual
ple and flexible than the H.323 protocol.
SIP uses the existing Internet and HTML
structures to provide VoIP transmissions.
In addition, SIP is more scalable, allow-
ing applications to grow in scope without
any concern for the existing architecture.
SIP gives network managers the flexibili-
ty to select any type of architecture, from
a heavily centralized network controlled
extensively by a server, to a less concen-
trated network where intelligence is
found at the endpoints that communi-
cate directly with each another.
S/sec
Samples per second.
Serial Port
Serial Ports are physical ‘plug-ins’.
They allow two devices to exchange
information or data. A Serial Cable is
used to connect the two Serial Ports
together.
SOHO
Acronym for Small Office/Home Office.
It’s a burgeoning market comprised of
solo professionals, part-time work-at-
homes, telecommuters and small
businesses.
Tel Lines 1, 2, 3, or 4
A jack or plug-in on the back panel of
TalkSwitch which can accept a RJ-11
plug from either a telephone line or PBX
system. A single line telephone cable can
be plugged into this jack and will
become a usable TalkSwitch Line.
Telephone Keypad
The collection of push buttons on a
touchtone telephone.
Telephone Wall Jack
A wall outlet for a standard telephone
jack.
Terminal Adapter
A device that allows analog devices to be
used on ISDN (digital) lines. Terminal
Adapters are somewhat similar to
modems.
Touchtone telephone
A push-button telephone which emits
distinctive (DTMF) tones as different but-
tons on the keypad are pressed.
Two Line Telephone
A telephone which allows you to make
and receive calls on two separate
telephone lines.
TX/RX
An acronym for transmit and receive.
USB
Short for Universal Serial Bus, the USB
connection supports more bandwidth
than a serial or parallel connection.
Virtual Extension
A telephone or other communications
device not physically connected to
TalkSwitch as an extension, but which
provides the same functionality. In
general, the term ‘virtual’ distinguishes
something that is merely conceptual
from something that has physical reality.
TalkSwitch’s Remote Extensions are
virtual extensions.
Voicemail (Call Answer)
A service provided by TalkSwitch or
telephone companies which gives callers
the opportunity to leave a message when
your extension or telephone line is busy
or unanswered.
VoIP
Voice over IP is a term used to describe
the technology of taking voice and then
applying algorithms to digitize, compress
and carry the data over an IP connection.
TS manual 11th ED_CVA_v11_CD_Release.qxd 7/13/2004 3:36 PM Page 142