THOMSON ST 2030 SIP, Administrator'S Manual

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ST2030s VoIP Business Phone
ST2030s SIP Administrator Guide v3.0
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Network Time Protocol (NTP)
NTP is an Internet standard protocol that assures accurate synchronization to the
millisecond of computer clock times in a network of computers. NTP sends periodic time
requests to servers, obtaining server time stamps and using them to adjust the client's
clock.

Simple Network Management Protocol (SNMP)
SNMP is a set of protocols for managing complex networks. It works by sending
messages, called protocol data units (PDUs), to different parts of a network. SNMP-
compliant devices, called agents, store data about themselves in Management Information
Bases (MIBs) and return this data to the SNMP requesters.

Address Resolution Protocol (ARP)
ARP is a network layer protocol used to convert an IP address into a physical address
(called a DLC address), such as an Ethernet address. A host wishing to obtain a physical
address broadcasts an ARP request onto the TCP/IP network. The host on the network
that has the IP address in the request then replies with its physical hardware address

Transmission Control Protocol (TCP)
TCP is one of the main protocols in TCP/IP networks. Whereas the IP protocol deals only
with packets, TCP enables two hosts to establish a connection and exchange streams of
data. TCP guarantees delivery of data and also guarantees that packets will be delivered
in the same order in which they were sent.
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Session Description Protocol (SDP)
SDP is a protocol that defines a text-based format for describing streaming media
sessions and multicast transmissions. SDP is not a transport protocol but a method of
describing the details of the transmission. For example, a SDP file contains information
about the format, timing and authorship of the transmission, name and purpose of the
session, any media, protocols or codec formats, the version number, contact information
and broadcast times.