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Course Outline
Objectives:
- Explain the operation of circuit-switched networks for government use.
- 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 CODECs used in voice and video compression, such as G711, G729, and H261/3/4.
- Identify and explain the fields of the Real Time Transport Protocol (RTP) and Real Time Control Protocol (RTCP), including carrying DTMF tones.
- Calculate bandwidth requirements for various voice compression algorithms.
- Explain and demonstrate the need for security and encryption within VoIP for government communications.
- Describe and explain the H.323 protocol stack.
- Describe and explain call setup and signaling (H.225).
- Describe and explain H.245, fast start, and tunneling of H.245.
- Describe and explain SIP call setup.
- Describe and explain SIP servers.
- Describe and explain Session Description Protocol (SDP).
- Describe and explain soft switching, including MGCP and H.248.
- Describe and explain the use of Stream Control Transmission Protocol (SCTP) in backhauling signaling messages.
- Describe and explain the importance of network delay and the need for Quality of Service (QoS) in the network.
- Describe and explain the differences between reservation and prioritization 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 Multiprotocol Label Switching (MPLS) to deliver QoS in the WAN environment.
- Describe the use of VLANs to deliver QoS in the LAN environment.
Practical Exercises:
- Lab Exercise 1: Practical VoIP in the LAN for government networks.
- Lab Exercise 2: Build an 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 H.323 packets using Wireshark.
- Lab Exercise 5: Calls between PSTN and IP networks for government communications.
- Lab Exercise 6: Configure QoS and make calls to examine the effects.
- Lab Exercise 7: Security and VoIP for government use.
Equipment used in Practical Sessions:
- Cisco 2600 series and 2800 series voice-capable routers, Cisco ASA 5505 firewalls. IP telephones, softphones, and analog telephones as required. SIP client and server software as required.
Requirements
- It is assumed that participants for government will have a working knowledge of TCP/IP.
21 Hours
Testimonials (2)
His huge amount of knowledge.
Mirela Ochia - Deutsche Telekom Pan-Net Romania S.R.L.
Course - Practical SIP Telephony
Hands on and setup were nicely done and practical knowledge thoroughly imparted. Trainer was really helpful throughout.
