1
Introduction
- A few reminders on the basic concepts of VoIP.
- New multimedia applications.
2
More about IP protocols
- TCP/IP architecture and security in networks.
- LAN networks. Need for a multimedia VLAN.
- RTP/RTCP protocols. Multicast.
- Example of using multicast traffic on the multimedia VLAN.
Hands-on work
Implementing a multimedia VLAN network, including protocol implementation and configuration of inter-VLAN routing. Implementing a RADIUS server and a certification authority.
3
The SIP architecture.
- SIP protocol signaling.
- SIP architecture: SIP servers, Proxy, Registrar, etc.
- The functions of proxy servers.
- The Application Layer Gateway.
- Presence and instant messaging. IMPP (SIMPLE).
- Application to TP mobility: Mobile SIP.
- The SIP Forum interoperability tests.
Hands-on work
Example of a SIP call and implementation of a SIP Proxy-Registrar server. Configuring a Cisco router as a SIP-Analog Phone Gateway Registering the gateway.
4
Voice quality. Compression
- Deteriorated voice quality.
- Quality measurement, the MOS score.
- Codecs: G711, ADPCM and LPC.
Hands-on work
Comparison of different codecs.
5
Providing quality on your network
- Quality delivery options. Traffic measurement.
- Quality of service on an IP network. RSVP Resource Reservation.
- Priorities with DiffServ and IntServ. MPLS and VPN.
- Tools to maintain voice quality.
Hands-on work
Example of bandwidth restriction between the three sites to 128 KB/s. Increased load on the network with continuous large packets. Starting VoIP calls. LLQ configuration.
6
Mobile IP
- Make an IP network mobile. Problems.
- Routing in an IP network.
- Components of mobile agents: Home agent and Foreign agent, their functions.
- Wireless networks and mobility.
7
Evolution of Voice over IP
- Future evolutions.
- Deployment methodology.
- Upcoming developments. VoIP operators.
3d
- 21h00 
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