Siemens Gigaset C470 IP Manual page 179

Glossary
L
LAN
Local Area Network
Network with a restricted physical range. A LAN can be wireless (WLAN) and/or wired.
Local IP address
The local or private IP address is the address for a network component in the local net-
work (LAN). The network operator can assign any address he or she wants. Devices that
act as a link from a local network to the Internet (gateway or router) have a public and
a private IP address.
See also IP address.
Local SIP Port
See SIP port/Local SIP port.
M
MAC address
Media Access Control Address
Hardware address by means of which each network device (e.g. network card, switch,
phone) can be uniquely identified worldwide. It consists of 6 parts (hexadecimal num-
bers) separated by a "-" (e.g. 00-90-65-44-00-3A).
The MAC address is assigned by the manufacturer and cannot be changed.
Mbps
Million bits per second
Unit of the transmission speed in a network.
MRU
Maximum Receive Unit
Defines the maximum user data volume within a data packet.
MTU
Maximum Transmission Unit
Defines the maximum length of a data packet that can be carried over the network at a
time.
Music on hold
Music on hold
Music that is played while you are on a Consultation call or Toggling. The waiting par-
ticipant hears music while on hold.
N
NAT
Network Address Translation
Method for converting (private) IP addresss to one or more (public) IP addresses. NAT
enables the IP addresses of Network subscriberss (e.g. VoIP telephones) in a LAN to be
concealed behind a shared IP address for the Router on the Internet.
VoIP telephones behind a NAT router cannot be reached by VoIP servers (on account of
the private IP address). In order to "get around" NAT, it is possible to use (alternatively)
ALG in the router, STUN in the VoIP telephone, or for the VoIP provider to use an Out-
bound proxy.
If an outbound proxy is made available you must allow for this in the VoIP settings for
your phone.
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