VoIP and IP telephony

As VoIP and IP telephony networks are deployed, administrators see an entirely new set of problems and issues. The administrators are finding out that the converged networks are not the same as the old data networks. Voice implementations require special design, security, and troubleshooting. This course presents those elements for the IP professional. The course offers an overview of the issues related to carrying voice on a data network, the protocols used, and the issues associated with QoS, troubleshooting, security, and design.

The key topics explored include:

• TCP/IP Review and Introduction to IP Telephony
• Quality of Service
• IP Telephony Using H.323
• IP Telephony Using SIP
• VoIP Security
• VoIP Design

This course is recommended for:

• Telecommunications professionals involved in the sale or implementation of IP telephony products or services
• IT staff building or managing IP networks supporting voice applications
• Industry consultants providing support or services to companies implementing or considering IP telephony solutions
• Network engineers that are required to implement and maintain VoIP networks

Topics covered in the 5 day course:

TCP/IP Review and Introduction to IP Telephony

1. Overview of the TCP/IP suite
2. Overview of IP addressing and routing
3. Transport Layer Protocols
4. How Internet endpoints are connected
5. Internet oversight
6. Introduction to voice over IP
7. Introduction to switching

Quality of Service

1. QoS definition and requirements
2. QoS parameters and network class of service
3. The traditional approach to QoS
4. Internet Protocol (IP): A review
5. IP QoS approaches
6. Integrated services
7. Differentiated services
8. Multiprotocol Label Switching
9. Dealing with congestion
10. Delivering QoS across multiple networks
11. Acceptability factors for VoIP

IP Telephony Using H.323

1. Overview of telephones, gateways and gatekeepers
2. Introduction to VoIP standards
3. Overview of VoIP economics and standards, and IP Fax
4. Voice over IP and H.323
5. H.323 gateways
6. H.323 summary of voice coding options

Introduction to SIP

1. SIP architecture
2. SIP RFCs
3. SIP call flow
4. Networking issues
5. Proxy servers
6. Directory servers

Introduction to SIP Messages

1. Message structure
2. Message types
3. Call reference
4. Content types
5. Session Description Protocol
6. Detailed call flow
7. Exceptions

Session Initiation Protocol

1. Request messages
2. Supervisory messages
3. Response messages
4. Exception messages

Troubleshooting Simple Call Scenarios

1. Two party call incomplete scenarios
2. Call feature scenarios

Session Description Protocol

1. SDP fields
2. SDP syntax
3. Announcements
4. Call scenarios

Troubleshooting Incompatible Media Scenarios

1. Voice coding scenarios
2. Equipment type scenarios

Media Transport with SIP

1. RTP encapsulation
2. Payload types
3. RTCP

Troubleshooting Network scenarios

1. Gateway problems
2. Proxy issues
3. Timing issues

IP Telephony Security

1. Industry trends and problems
2. Definition and architecture
3. General security issues
4. VoIP security specifics

Securing the IP telephony network

1. Where do we begin?
2. Components
3. Signalling message flows
4. Data flows
5. Hidden issues
6. DNS queries
7. NAT traversal
8. VLANs
9. Protocol analysers
10. Internet service providers/ ITSPs
11. Carrier networks

IP telephony security best practices

Design Checklist

1. The audit
2. The equipment
3. WAN technologies
4. Survivability
5. Security
6. MOS and reality

The Local Area Network

1. Case presentation and discussion
2. Case
3. Segmentation
4. Bridges, switches, and routers
5. Concerns
6. Speeds and feeds

Enterprise Networks

1. Case presentation and discussion
2. WAN technologies and services
3. Security and reliability

Carrier Networks

1. Case presentation and discussion
2. Quality issues
3. Survivability
4. The last mile options

pdf version

For further information call us on +61 3 8611 9800 or request information here. To request a booking on a course, click here.