Siemens Gigaset DX800A all in one Specifications Page 177

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175
Glossary
Gigaset DX800A all in one / GBR / A31008-N3100-L101-2-7619 / Glossary.fm / 07.04.11
Version 4, 16.09.2005
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 "-"
(e.g., 00-90-65-44-00-3A).
The MAC address is assigned by the manu-
facturer 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.
MSN
Multiple Subscriber Number. You can
request up to 10 different telephone num-
bers for the ISDN multiple connection. An
MSN is one of the phone numbers assigned
to you without the local area code.
Your telephone uses the MSN in line with
your requirements, as a receive connection
and/or send connection.
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 that is played while you are on a
Consultation call or during 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. NAT enables the IP addresses of
Network subscribers (e.g., VoIP telephones)
in a LAN concealed behind a shared IP
address for the Routers on the Internet.
VoIP telephones behind a NAT router cannot
be reached by VoIP servers (on account of
the private IP address). To "get around" NAT,
it is possible to use either ALG in the router,
STUN in the VoIP telephone, or for the VoIP
provider to use an Outbound proxy.
If an outbound proxy is made available, you
must allow for this in the VoIP settings for
your phone.
Network
Group of devices. Devices can be connected
in either wired or wireless mode.
Networks can also differ in range and struc-
ture:
Range: Local networks (LAN) or wide-
area networks (WAN)
Structure: Infrastructure network or
ad-hoc network
Network subscriber
Devices and PCs that are connected to each
other in a network e.g., servers, PCs and
phones.
O
Outbound proxy
Alternative NAT control mechanism to STUN
and ALG.
Outbound proxies are implemented by the
VoIP provider in firewall/NAT environments
as an alternative to SIP proxy server. They
control data traffic through the firewall.
Outbound proxy and STUN servers should
not be used simultaneously.
See also: STUN and NAT.
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