Circuit Switch# Dedicated transmission path# Continoues transmission of data# Message are not stored# The path is established for entire conversation# Call set-up delay, negligible transmission delay# Fixed Bandwidth transmission# no overhead bits after call set- up# prefer for long data message (minimum time connect) Packet Switch# No Dedicated path# Transmission of packet, packet maybe stored until delivered# Route established for each packet (for datagram packet switching)# packets transmission delay# Network maybe response for individual packets# Dynamic use of bandwidth # Overhead bits in each packet# Prefer for short data message (variance time connect)# more efficiency in Bandwidth Overview of Circuit and Packet Switch
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Circuit Switch# Dedicated transmission path# Continoues transmission of data# Message are not stored# The path is established for entire conversation# Call set-up delay, negligible transmission delay# Fixed Bandwidth transmission# no overhead bits after call set-up# prefer for long data message (minimum time connect)
Packet Switch# No Dedicated path# Transmission of packet, packet maybe stored until delivered# Route established for each packet (for datagram packet switching)# packets transmission delay# Network maybe response for individual packets# Dynamic use of bandwidth # Overhead bits in each packet# Prefer for short data message (variance time connect)# more efficiency in Bandwidth
Overview of Circuit and Packet Switch
IP Telephony
Voice over Internet Protocol (VoIP)
SIP
RTP
H.323 RTSP
EthernetATM
AAI.5AAI.3/4
Sonet
PPP
UDPTCP
RTCPRSVP
Media EncapsH.261, MPEG
IPv4, IPv6
V.34
PPP
Signalling IP telephony
KOMPONEN Standard H.323
Inter-Operabilitas-VoIP
Terminal
Audio CodecG.711G.723G.729
Audio CodecG.711G.723G.729
Video CodecG.261H.263
User DataT.120
System Control
H.245 Control
Q.931
RAS Controling
RTP
LANINTERFACE
Audio Equiptment
Video Equiptment
Data Equiptment
System ControlUser Interface
Komponen H.323
Hubungan komponen H.323 dan lingkungannya
SIP ProtocolSIP is An application layer signaling protocol that
defines initiation, modification and termination of interactive, multimedia communication sessions between users.
Components of SIP Protocol :
1. SIP User Agents
User Agent Clients (UAC)
User Agent Servers (UAS)
2. SIP Servers
Proxy server Redirect server
Location server Registrar server
Related Protocol of SIP
SIP Messages►SIP messages are defined for two formats:requests, sent from a client to a server :
1. INVITE 4. BYE
2. ACK 5. CANCEL
3. OPTION 6. REGISTER
responses, sent from a server to a client.
1xx: Provisional 4xx: Client Error
2xx: Success 5xx: Server Error
3xx: Redirection 6xx: Global Failure
Komunikasi antara SIP Agent dan SIP Server SIP SERVER
PROXY
REDIRECT
REGISTRAR
LOCATION
(1)
UAC
UAS
UAC
UAS
SIP USER AGENT SIP USER AGENT
Signaling Messages BetweenUser Agent And Server
Keterangan : (1) Fungsi server tidak harus berada pada satu komputer