HiPath 3000/5000 in the LAN Network
Nur für den internen Gebrauch
A31003-H3590-S100-7-7620, 06/2012
13-2
HiPath 3000/5000 V9, Service documentation
h3h5_in_the_lan.fm
Network protocols
13.1
Network protocols
A number of protocols play a role in data communication (X.25, Frame Relay, ATM and TCP/
IP). The IP (Internet Protocol) switching layer is the Internet’s key protocol and permits interop-
erability with other networks and protocols, for example, Ethernet, X.25, Frame Relay and
ATM. IP is consequently often used as a synonym for the technology as a whole. The protocols
TCP, UDP and RTP are used by the various applications and requirements in the Internet, such
as “File Transfer (FTP)”, “e-mail (SMTP)” and “WWW”. RTP (Real Time Protocol) is used for
voice transmission. The term “Voice over IP (VoIP)” indicates that the IP protocol is used to
transport voice information.
There are nowadays various protocols that result from the efforts of diverse standardization
bodies and standardization drives. The main standards are as follows:
●
H.323
●
H.450.x
●
SIP (Session Initiation Protocol, for Internet conferencing and telephony)
●
MGCP (Media Gateway Control Protocol)
Whereas H.323 and H.450 are “real” ITU-T standards, SIP is an “industry (de facto) standard)”
from the IETF (Internet Engineering Task Force). MGCP emerged from the SGCP (Simple
Gateway Control Protocol) and the IPDC (Internet Protocol Device Control) and has been sub-
mitted as a proposal to the ITU-T and the IETF.
SIP is an easy-to-implement standard which was developed to control Internet multimedia con-
ferences, particularly to support voice communication.
MGCP describes the connection setup and cleardown of intelligent telephones in networks with
packet transmission.
13.1.1
H.323
H.323 encompasses the following subjects:
●
Signaling (H.245, etc)
●
Video transmission
●
Voice data transmission/voice compression such as
–
G.723.1 (5.3/6.3 Kbps)
–
G.729A (8 Kbps)
●
Data applications (Application Sharing, T.120)
This shows that this standard comprises considerably more than necessary for pure voice data
transmission via data networks. H.323 was developed for multimedia applications.
Summary of Contents for HiPath 3000 Series
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