Siemens Gigaset C590 IP, Руководство пользователя

Страница: 208 / 222

207
Glossary
Gigaset C590 IP / IM-OST EN / A31008-M2215-R601-1-TE19 / Glossary.fm / 22.12.10
V
e
rsion 4, 16.0
9
.2005
U
UDP
User Datagram Protocol
Transport protocol . Unlike TCP , UDP is a
non session-based protocol. UDP does not
establish a fixed connection. The data pack-
ets ("datagrams") are sent as a broadcast.
The recipient is solely responsible for mak-
ing sure the data is received. The sender is
not notified about whether it is received or
not.
URI
Uniform Resource Identifier
Character string for identifying resources
(e.g., e-mail recipient, http://gigaset.com,
files).
On the Internet , URIs are used as a uniform
identification for resources. URIs are also
described as SIP addresses.
URIs can be entered in the phone as a
number. By dialling a URI, you can call an
Internet subscriber with VoIP equipment.
URL
Universal Resource Locator
Globally unique address of a domain on the
Internet .
A URL is a subtype of the URI . URLs identify a
resource by its location on the Internet . For
historical reasons the term is often used as a
synonym for URI.
User ID
See User name .
User name
Name/number combination for access e.g.,
to your VoIP account or your private address
directory on the Internet.
V
Voice codec
See Codec .
VoIP
Voice over Internet Protocol
Telephone calls are no longer placed and
transmitted over the telephone network but
over the
Internet (or other IP networks).
VoIP provider
A VoIP, SIP or Gateway provider is an Inter-
net service provider that provides a Gate-
way for Internet telephony. As the phone
works with the SIP standard, your provider
must support the SIP standard.
The provider routes calls from VoIP to the tel-
ephone network (analogue, ISDN and
mobile) and vice versa.
W
WAN
Wide Area Network
Wide-area network that is unrestricted in
terms of area (e.g.,
Internet ).