Tyco Security Products SG-System 5, Руководство по эксплуатации

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Appendix E: Glossary
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Ping
A standard network command which can be used to verify the presence of a device on a network, using the device IP address. Ping is implemented as
part of the ICMP protocol and consists of the Echo Request and Echo Reply commands (poll and response respectively).
POTS
Plain Old Telephone System. An acronym used to describe a standard analog telephone network, or alternatively a standard analog telephone line.
Printer Message
The alarm information delivered by a receiver to a central station printer. This information is generally encapsulated in a descriptive English text mes-
sage.
Profile
Generally refers to a group of options. The receiver can select a "profile" based on certain conditions.
Protocol
The pre-established order of events and meanings of the various characters in the information transmitted from a receiver to a monitoring computer.
PSTN
Public Switched Telephone Network. Analogous to POTS.
Receiver
The equipment used to receive alarms sent from panels. Sur-Gard's receivers are the SLR and the MLR. 'Receiver' is sometimes used interchangeably
with 'line card' as it is the line card which actually receives the alarm in the MLR.
Ring
One of the wires used on a phone line. By convention this is red.
Rounds
Two or more packets of alarm information used for error checking. If two packets (rounds) are identical the packet contains valid data.
RRLLL
The part of the automation message which stores the receiver number and line card number. The length of this field is variable and is controlled via an
option in both the line card and the SG-CPM5.
RS-232
An asynchronous, point-to-point serial communications protocol. Used to communicate between the SG-CPM5 and the automation computer.
Server
One side of a 2-sided TCP socket connection. The server is the one responsible for receiving the socket connection with the remote host (the client). In
general, a host which acts as a server can receive multiple client socket connection requests simultaneously. The SG-CPM5 acts as a server to both the
console and the web interface.
SG-CPM5
Central Processing Module. The SG-CPM5 controls the overall operation of the SG-System 5 receiver, which includes multiplexing alarm signals from
the line cards and sending them to the appropriate outputs.
SG-DRL5-IP PAD
Paddle card - Each paddle card connects to a line card and provides a connection for an Ethernet cable.
SG-MLRF5
Sub-rack metal work.
SG-MP5
Mid plane - this is not sold separately but part of the SG-MLRF5.
SG-MRLF5-RM
Rack mounts rails.
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