Siemens optiPoint 410 entry Administrator's Manual page 231

Alphabetical Reference
RTCP
Abbreviation for "Realtime Transport Control Protocol".
RTP
Abbreviation for "Realtime Transport Protocol".
RAM
Abbreviation for "Random Access Memory".
Memory with read / write access.
ROM
Abbreviation for "Read Only Memory".
Memory with read only access.
SDP
Abbreviation for "Session Description Protocol ".
SIP
Abbreviation for "Session Initiation Protocol".
Protocol standard for initialising calls in ! IP networks. Additional informa-
tion see ! page 34.
SNMP
Abbreviation for "Simple Network Management Protocol".
The protocol is used for communication with servers that takeover net-
work management functions. This includes for example, protocolling er-
rors that occur in network components (SNMPTrap). Additional information
see ! page 43.
SNTP
Abbreviation for "Simple Network Time Protocol".
The protocol is used between timeservers and terminal devices of a net-
work to synchronize the time of the terminal device. Additional information
see ! page 43.
Subnet Mask
Classifies networks in A-, B- and C networks. Each class has a subnet
mask that demasks the relevant bits. 255.0.0.0 for Class A, 255.255.0.0 for
Class B and 255.255.255.0 for Class C. In a Class C network, for instance,
there are 254 ! IP addresses.
Switch
Network device that selects a path or circuit for sending data to its next
destination. A switch may also include a router function.
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