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コース概要
Objectives:
- Explain the operation of circuit switched networks.
- Contrast the differences between circuit switched and packet switched networks.
- Explain the fields and flags within the IP header – including the new DSCP field.
- Explain and quantify the need for voice compression and delay in an IP network.
- Identify the CODEC’s used in voice and video compression – e.g. G711, G729 and H261/3/4.
- Identify and explain the fields of the Real Time Transport Protocol and Real Time Control Protocol – including carrying DTMF tones.
- Calculate bandwidth requirements for various voice compression algorithms.
- Explain and demonstrate the need for security and encryption within VoIP.
- Describe and explain the H.323 protocol stack.
- Describe and explain call setup and signalling (H.225).
- Describe and explain H.245, fast start and tunnelling of H245.
- Describe and explain SIP call setup.
- Describe and explain SIP Servers.
- Describe and explain SDP.
- Describe and explain Soft Switching – including MGCP and H248.
- Describe and explain the use of SCTP in backhauling signalling messages.
- Describe and explain the importance of network delay and the need for QoS in the network.
- Describe and explain the differences between reservation and prioritisation QoS in an IP Network.
- Describe the use of IntServ and RSVP in QoS.
- Describe the use of TOS and DiffServ in QoS.
- Describe and explain the need for multiple queues and intelligent scheduling of packets at router/switch interfaces.
- Describe the use of MPLS to deliver QoS in the WAN environment.
- Describe the use of VLAN’s to deliver QoS in the LAN environment.
Practical Exercises:
- Lab Exercise 1: Practical VoIP in the LAN.
- Lab Exercise 2: Build IP network, make calls and examine RTP packets using Wireshark.
- Lab Exercise 3: Make calls and examine SIP Packets using Wireshark.
- Lab Exercise 4: Make calls and examine H323 Packets using Wireshark.
- Lab Exercise 5: Calls between PSTN and IP Networks.
- Lab Exercise 6: Configure QoS and make calls to examine effects.
- Lab Exercise 7: Security and VoIP.
Equipment used in Practical Sessions:
- Cisco 2600 series and 2800 series voice capable routers and Cisco ASA 5505 Firewalls. IP Telephones, softphones and analogue telephones as required. SIP client and server software as required.
要求
- It is assumed the delegates will have a working knowledge of TCP/IP.
21 時間
お客様の声 (2)
His huge amount of knowledge.
Mirela Ochia - Deutsche Telekom Pan-Net Romania S.R.L.
コース - Practical SIP Telephony
Hands on and setup were nicely done and practical knowledge thoroughly imparted. Trainer was really helpful throughout.
