IP Phone User's Manual

Abbreviations and Technical Terms
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ROM
Abbreviation of "Read Only Memory."
Memory with read-only access.
Router
Routers set up connections to gateways and have access to multiple sub-
nets and other routers. A router uses the IP address to determine the sub-
net or router to which it should send data. It decides which path is currently
the most cost-effective for data transmission.
Security
The main security requirement for an Æ IP phone is to ensure that the
messages between the phone and Æ Gatekeeper cannot be tapped.
SIP
Abbreviation of "Session Initiation Protocol."
Default protocol for initializing calls in Æ IP networks.
SNMP
Abbreviation of "Simple Network Management Protocol."
The protocol is used for communication with servers that perform network
management functions. This includes logging errors that occur at network
components (SNMP-Trap).
SNTP
Abbreviation of "Simple Network Time Protocol."
The protocol is implemented between a network’s time servers and termi-
nals for synchronizing the time of the terminals.
Switch
Switching center in a star network, for example HiPath 4000 system.
TCP
Transmission Control Protocol is the central protocol in the Internet apart
from Æ IP. It provides a connection-oriented, reliable, full-duplex service in
the form of a data stream.
TLS
Abbreviation of Transport Layer Security. Default protocol for computer au-
thentication with certificates and encryption.