NET 271 IP Telephony

Lecture Hours: 3
Lab Hours: 3
Credits: 4

Introduces Cisco IP Telephony, a converged voice and data network. Includes the challenges faced by these different technologies. Covers Voice over IP and Quality of Service concepts as they apply to the Cisco Call Manager Express environment.

Student Learning Outcomes:

Determine the relevant critical business and technical needs in order to develop a Cisco IP Telephony design framework in a Small Office and Home Office (SOHO) environment, including the choice of signaling type and encoding methods.
Select the appropriate hardware and software components to support a proposed SOHO IP telephony design.
Determine which high availability issues would influence the selection of network hardware and software for an SOHO environment.
Design the appropriate dial plan to support SOHO design requirements.
Describe the similarities and differences between a Public Switched Telephone Network (PSTN) and VoIP including call transport, call signaling and bandwidth requirements.
Describe the technologies used in Voice over IP and how they differ from PSTN technologies.
Determine how PSTN connectivity issues influence SOHO hardware and software selection.
Configure various connection types to the PSTN.
Explain the benefits of hierarchical and scalable dial and numbering plans.
Install an IP Telephony solution in a SOHO environment using CME.
Configure Cisco Call Manager Express to support IP Phones.
Secure an IP Communications network.
Describe effective troubleshooting methods to resolve issues in SOHO IP Telephony networks.
Use appropriate troubleshooting methods to determine and solve QoS issues in an SOHO IP Telephony networks.

Content Outline

Introduction to Packet Voice Technologies
- Traditional Telephony
- Packetized Telephony Networks
- IP Telephony Applications
- Analog Voice Basics
- Analog-to-Digital Voice Encoding
- Signaling Systems
Introduction to VoIP
- Requirements of Voice in an IP Internetwork
- Gateway and Their Roles
- Encapsulating Voice in IP Packets
- Calculating Bandwidth Requirements
Configuring Cisco CallManager Express (CME)
- Overview of Cisco CME
- Differences between Traditional Telephony and VoIP
- Challenges and Solutions in VoIP
- Cisco CME Features and Functionality
- Cisco CME Network Parameters
- IP Phone Registration
- Ephone-dn and Ephone
- CallManager Express Files
- Initial Phone Setup
Voice Dial Plans, Configuring Voice Interfaces and Dial Peers
- Call Establishment Principles
- Configuring Dial Peers
- Special-Purpose Connections
- Building a Scalable Numbering Plan
- Configuring Voice Ports
- Adjusting Voice Quality
- Analog and Digital Voice Interfaces
- Configuring Analog and Digital Voice Interfaces
- Dial Peers
- Call Setup and Digital Manipulation
- Class of Restriction
Configuring CME Additional Features
- Cisco CME GUI Features
- Configuring Phone Features
VoIP Signaling and Call Control
- Need for Signaling and Call Control
- Configuring H.323
- Configuring MGCP
Improving and Maintaining Voice Quality
- IP QoS Mechanisms
- Implementing AutoQoS
- Comparing Voice Quality Measurement Standards
- VoIP Challenges
- QoS and Good Design
- Jitter
- Delay
- Apply QoS in the Campus
- Qos Tools in the WAN
- Configuring QoS in the WAN
- Configuring CAC
- Voice Bandwidth Engineering