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Glossary
Gigaset DE900 IP PRO / en / A31008-M2210-R101-3x-7619 / glossary.fm / 22.03.2011
Version 2, 27.05.2010
U
UDP
User Datagram Protocol
Transport protocol. Unlike TCP, UDP is a non session-based protocol. UDP does not
establish a fixed connection. 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 sequence for identifying resources (e.g., e-mail recipient, www.gigaset.com,
files).
On the Internet, URIs are used as a unique 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 identification.
User identification
Name/number combination for access, e.g., to your VoIP account.
V
Voice codec
See Codec.
VoIP
Voice over Internet Protocol
Calls are no longer established and transmitted via the telephone network, but via the
Internet (or other IP networks).
VoIP provider
A VoIP, SIP or gateway provider is an Internet service provider that provides a gateway
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 telephone network (analogue, ISDN and
mobile) and vice versa.
