THOMSON ST 2030 SIP Administrator's Manual page 13

• User Datagram Protocol (UDP)
UDP is a simple protocol that exchanges data packets without acknowledgments or
guaranteed delivery. SIP can use UDP as the underlying transport protocol. If UDP is
used, retransmissions are used to ensure reliability.
• Trivial File Transfer Protocol (TFTP)
TFTP allows files to be transferred from one computer to another over a network.
• Dynamic Host Control Protocol (DHCP)
DHCP is used to dynamically allocate and assign IP addresses. DHCP allows you to
move network devices from one subnet to another without administrative attention. If
using DHCP, you can connect ST2030 IP phone to the network and become operational
without having to manually assign an IP address and additional network parameters.
• Domain Name System (DNS)
DNS is used in the Internet for translating names of network nodes into addresses. Sip
uses DNS to resolve the host names of end points to IP addresses.
• Hyper Text Transfer Protocol (HTTP)
HTTP is the underlying protocol used by the World Wide Web. It defines how messages
are formatted and transmitted, and what actions Web servers and browsers should take in
response to various commands.
• Simple Network Time Protocol (SNTP)
SNTP is a simplified version of NTP. SNTP can be used when the ultimate performance
of the full NTP implementation described in RFC 1305 is not needed or justified
• 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.
ST2030 SIP Administrator Guide 13
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