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Gigaset A580 IP / US English / A31008-xxxx-xxxx-x-xxxx / glossary.fm / 07.07.2010
Glossary
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 that is played while you are on a Consultation call or Toggling. 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 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). To "get around" NAT, it is possible to use (alternately) 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 structure:
u Range: local networks (LAN) or wide-area networks (WAN)
u 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
Version 8, 03.09.2008
Outbound proxy
Alternate NAT control mechanism to STUN and ALG.
Outbound proxies are implemented by the VoIP provider in firewall/NAT environments as an alternate to SIP proxy server. They control data traffic through the firewall.
Outbound proxy and STUN servers should not be used simultaneously.
£ STUN and NAT.
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