Polycom ViewStation SP, User Manual

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Glossary
ViewStation SP User Guide 162 www.polycom.com
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Data Conferencing Enables people in different locations to work
on the same document via networked
computers. Also referred to as collaborative
computing.
DHCP Dynamic Host Configuration Protocol.
DHCP servers permit multiple devices to
share a group of IP addresses, assigning
one to a specific device as needed.
Digital Line A telephone line that carries signals in
discontinuous streams of on and off pulses.
The audio source must be “coded” into on
and off pulses, and “decoded” into an analog
signal at the far end destination.
PBX telephone systems, and ISDN are
examples of systems which use digital
signaling. PBX and digital Centrex systems
use proprietary non-standard signaling,
forcing customers to purchase proprietary
phones.
Digital or Proprietary Device Telephone equipment designed specifically
for connection to a particular brand and
model of PBX.
DSL Digital Subscriber Line. Uses existing copper
telephone lines and connects to the phone
company’s Central Office (CO). DSL
transforms these phone lines into
multi-megabit data pipes for digital video and
data.