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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
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 six parts (hexadecimal
numbers) 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 is played while you are making a consultation call or call swapping. The waiting
participant hears music while on hold.
N
NAT
Network Address Translation
Method for converting (private) IP addresses to one or more (public) IP addresses.
With NAT, the IP addresses of network subscribers (e.g., VoIP phones) in a LAN can be
hidden behind a joint IP address for the router in the Internet.
VoIP telephones behind a NAT router cannot be reached by VoIP servers (on account
of the private IP address). To "bypass" NAT it is possible to either use ALG in the router,
STUN in the VoIP telephone or an outbound proxy for the VoIP provider.
If an outbound proxy is made available you must allow for this in the VoIP settings for
your phone.
