Gigaset A510IP Manual page 169

Glossary
Transport protocol
Controls data transport between two communication partners (applications).
See also: UDP, TCP, TLS.
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 packets ("datagrams") are sent as a broadcast. The recipient is solely
responsible for making 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 sub-
scriber 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 histor-
ical 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 direc-
tory 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 Internet service provider that provides a Gateway for Inter-
net telephony. As the phone works with the SIP standard, your provider must support the SIP
standard.
The provider routes calls from VoIP to the telephone network (analogue, ISDN and mobile) and
vice versa.
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