Specifications

hg-a.fm
A31003-H3580-M103-2-76A9, 01-2009
HiPath 3000/5000 V8 - HG 1500 V8, Administrator Documentation
A-7
Nur für den internen Gebrauch
Terms and Abbreviations
MCU
Abbreviation of "Multipoint Controller Unit". MCUs are used for audio and video calls with
multiple subscribers. They centralize data distribution and combine voice and video.
MD5
Message Digest algorithm that can create a 128-bit digital signature from a text of any
length. The digital signature shows if the text was subsequently changed. MD5 is therefore
used as an authentication procedure.
MIB
Abbreviation of "Management Information Base". An MIB compiles information and param-
eters of a network device. It is required for administration via SNMP.
MoH
Music on Hold. A melody or else an announcement text heard by the waiting subscriber
when a connection is placed on hold or being forwarded within a telecommunication sys-
tem.
MPPC
Microsoft Point-to-Point-Compression. Data compression procedure implemented for
speeding up data transmissions.
MSC
Abbreviation for "Media Stream Control“. The Media Stream Control (MSC) monitors and
administers the media streams that are routed via HG 1500. The MSC is used to transmit
media data between LAN and ISDN.
Multicast
Multicast is the simultaneous transfer of data from a source to multiple recipients in net-
works.
N
NAT
Network Address Translation. Procedure for mapping private IP addresses to public IP ad-
dresses. NAT is necessary because public IP addresses are becoming scarcer. NAT is also
used for data security because it conceals the internal LAN structure.
NTBA
Network terminator adapter. Is responsible for switching the Uk
0
interface (national) to the
S
0
bus (international) for an ISDN basic access.