Specifications
hg-a.fm
A31003-H3580-M103-2-76A9, 01-2009
HiPath 3000/5000 V8 - HG 1500 V8, Administrator Documentation
A-11
Nur für den internen Gebrauch
Terms and Abbreviations
SNTP
Simple Network Time Protocol. Protocol for transporting an official time in networks and
the Internet. The SNTP protocol is characterized by its simplicity and an inaccuracy of sev-
eral hundred milliseconds. It is defined in RFC 1769. The extended variant is called NTP.
SRTP
Abbreviation for "Secure Real-time Transport Protocol“.
SSL
Secure Socket Layer. Transmission protocol that supports encrypted communication. The
advantage of the SSL protocol is that it supports the implementation of every higher proto-
col based on the SSL protocol. This guarantees application- and system-independence.
SSL performs encryption using public keys that are confirmed by a third party in accor-
dance with the X.509 standard. The high level of security is guaranteed by the fact that the
decryption key must be individually redefined and is only saved at the user’s facility.
STAC
Data compression procedure implemented for speeding up data transmissions. The PPP
Stac LZS Compression protocol described in RFC 1974 is a competitor procedure for MP-
PC.
T
T.30
T.30 is an ITU standard for fax transmission. It specifies the functions within the first three
layers for the implementation of the group 3 fax service.
T.38
T.38 is an ITU standard for fax transmission. It governs the communication of group 3 fax
devices via IP networks.
TCP
Transmission Control Protocol. TCP sets up a virtual channel between two computers
(more precisely: endpoints between two applications on these computers). Data can be
transmitted in both directions on this channel. In most cases, TCP is based on the IP pro-
tocol. It belongs to Layer 4 of the OSI network layer model.
Terminal Device
A terminal device or endpoint is an H.323 component that can initiate or receive calls. In-
formation flows begin or end here. Examples include clients, gateways or MCUs.
TFTP
Trivial File Transfer Protocol described in RFC 783. This protocol does not support user au-
thentication, directory switching or directory listings. It is only used for uploading and down-
loading files directly with get and put commands.