Abus SECVEST Installer Manual page 32

Introduction
It is mainly used to send and forward email. Other spe-
cialised protocols such as POP3 or IMAP are used to re-
trieve messages.
SMTP servers use conventional connections to port 25
("smtp"). Newer servers also use port 587 in order to re-
ceive mail for authenticated users that must be sent to
other mail servers ("submission").
SNTP
Simple Network Time Protocol
The Network Time Protocol (NTP) is a standard for syn-
chronizing clocks in computer systems via packet-based
communication networks. NTP uses the UDP connection
free transport protocol, which was specially developed to
facilitate reliable time setting across networks with varia-
ble packet run times.
Generally, references to NTP refer to both the protocol
and its software reference implementation. The SNTP
(Simple Network Time Protocol) represents a simpler
form of the NTP.
Voice dialler
Component in the alarm panel for transmitting voice mes-
sages. The alarm information is transmitted in plain text.
The text to be transmitted is recorded using a micro-
phone on the alarm panel.
SSL
Secure Sockets Layer, a network protocol for the secure
transmission of data.
Transport Layer Security (TLS), widely known under its
previous designation, Secure Sockets Layer (SSL), is a
hybrid encryption protocol for secure data transmission
on the internet. Since version 3.0, the SSL protocol has
been further developed and standardised under the new
name TLS, where version 1.0 of TLS corresponds to ver-
sion 3.1 of SSL.
TLS encryption is mainly used today with HTTPS. Most
web servers support TLS 1.0, and many also support
SSLv2 and SSLv3 with a number of encryption methods.
Status
Alarm panel status: armed, internally armed or disarmed.
Status feedback
Feedback from the alarm panel to a module (arming de-
vice, info module, etc.) about its current status.
Status query
Query sent to the alarm panel about the system status
(e.g. by pressing the button on the wireless remote con-
trol).
Silent alarm
(Alarm type)
This alarm does not trigger any sounders (indoors and
outdoors remains quiet and calm), but a monitoring sta-
tion is discreetly notified (intruder is not scared off, rather
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caught in the act, aggressive intruders are not provoked,
etc.)
Supervision
The alarm panel monitors whether detectors are present
and active. The components report approx. every 4 min.
The alarm panel responds if it fails to receive status mes-
sages over a longer period of time.