VoIP

	Voice over IP
Overview	As computer and telephony integration proceeds, it can be predicted that present voice and data networks will combine to become a single organisational resource. The ability to route voice traffic over an IP network will result in major cost savings as separate network functions are combined within one multi-purpose entity. This two-day course examines the issues and defines the potential.
Potential delegates	Network Planners, Designers, and Engineers requiring an understanding of Voice over IP. Those requiring a comprehensive overview of how voice may be integrated into IP networks.
Prerequisites	An attendance of Introduction to Orion’s TCP/IP course or equivalent practical experience. Attendance of Orion’s voice and Data course would be an advantage.
Duration	This is a 2-day course and can be delivered at any suitable location.
Course Objectives	By the end of this course, the delegate will be able to: l Plan with confidence towards a single infrastructure for voice and data. l Make informed choice within network design to migrate towards that future. l Design and implement networks that save cost. l make rational and cost effective purchasing decisions l Describe the differences between H.323 and SIP. l Understand the softswitch architecture.

Course Content

Introduction

Voice and data convergence; Comparison of Voice and data networks

Switch Circuit Networks

Telephony numbering plan; Analogue Signalling; Digital Signalling; ISDN; SS7; delay; Post dial delay; echo; Voice quality.

TCP/IP

DoD Architecture; IP Addressing; principles of Routing; TCP & UDP; Port Numbers.

Voice Compression

G.711, G.726, G.728, G.729, G.723.1; MOS; Loading a network

RTP/RTCP

RTP; RTP header; mixers and translators; RTCP

ITU H.323

H.323 Architecture; Gateways, Gatekeepers, Terminals, Protocols; MCU; H.225 operation; H.245, H.450; H.261 & H.263; Gatekeeper discovery; Call connection descriptions

SIP

Sip Architecture; SAP; SDP Syntax; Proxy Servers Redirect servers; Call connection descriptions; SIP Requests and Responses; Usage of SDP with SIP.

MGCP

MGCP Architecture; MGCP Gateways; MGCP endpoints; MGCP Commands; MGCP call set up; MGCP and SIP

Megaco/H.248

Megaco/H.248 Architecture; Megaco/H.248 ITU-T/IETF; Terminations and contexts; Megaco/H.248 Packages; Megaco/H.248 Commands; Megaco/H.248 call set up; Megaco/H.248 and SIP.

VoIP Enhancements

VoIP Implementations; Directory Services; ILS; Transportation of signals.

Network Performance

Priority queuing; IP Precedence; RED; WRED; IEEE 802.1p, DIFFSERV; MPLS