Xblue Networks X-25 - Manual (Page 23)

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Protocol Documentation Description
TCP RFC 793 Transmission Control Protocol provides the reliability that Internet Protocol
(IP) does not, making it suitable for applications such as File Transfer and
emails.
Telnet RFC 2946 Telnet is a reliable connection-oriented transport protocol, which is Client/
Server Based. At default Telnet uses Port 23.
TFTP RFC 2349 Trivial File Transfer Protocol is a very basic and simple protocol, which is
loosely based on the FTP protocol.
UDP RFC 768 Using “User Datagram Protocol” networked computers can send short
messages known as datagrams. Although the delivery of a UDP packet is
faster it is not as reliable as TCP packets.
CLIP Calling Line Identifi cation Presentation
Table 3.6 VoIP & Signalling Protocols
Signalling Documentation Description
In/Out Band RFC 2833 In/Out Band is used to defi ne the method of transporting DTMF tones to
use on RTP connections. In-Band are tones that are “Heard” by the distant
party line DTMF Tones. Out of Band tones are used for signalling, such as
caller ID Tones.
MD5 RFC 3261 Message-Digest Algorithm 5 is a widely used Cryptographic hash function
(Security) that uses 128 bit hash value.
QoS RFC 2990 Quality of Service assigns different priorities to different data packets
depending on the packet requirements. Voice, for example, will receive
a much higher priority than non-voice traffi c, because voice traffi c needs
to be immediate and in order, whereas standard data packets are not
needed Immediately. Therefore, QoS is used to prioritize specifi c packets,
such as voice, within a packet-switched network. However, it does not
guarantee voice quality.
T.38 ITU-T T.38 T.38 is the standard for transporting FAX transmissions, between G3 FAX
devices over an IP Network.
RTP RFC 1889, 3550 Real-time Transport Protocol provides end-to-end network transport func-
tions suitable for applications transmitting real-time data, such as audio,
video or simulation data over multicast or unicast network servers. RTP is
a standardize protocol for delivering audio and video over the Internet
SDP RFC 2327 Session Description Protocol is purely a protocol that negotiates between
two endpoints to allow them to agree on a media type and format. It is
intended for describing multimedia sessions and it is used for a wide
range of networks and networking environments.
SIP V2 RFC 3261 Session Initiated Protocol is an applications layer control (signalling)
protocol created specifi cally for transmitting asynchronous data such
as voice and video. SIP is currently the most used IP standard used to
transmit Voice over the Internet.