Voice over IP (VoIP) and IP Telephony Solutions

In Bath

Price on request

Description

  • Typology

    Course

  • Location

    Bath

  • Duration

    3 Days

Description

Voice over IP (VoIP) is now a major growth sector within IT and telecommunications. VoIP is revolutionising both industries, and is driving organisations to unify their voice and data networks. Internet service providers are now competing head-on with traditional Telcos by offering Internet telephony and video conferencing services. Voice over IP not only offers substantial cost.
Suitable for: The Voice over IP course is designed for staff who will evaluate, plan, install, configure, administrate or support VoIP products and networks.

Facilities

Location

Starts

Bath (Somerset)
See map
11 Kingsmead Square, BA1 2AB

Starts

On request

To take into account

Delegates must have a good understanding of the TCP/IP protocol suite and of IP addressing prior to attending. Course 315: Internetworking with TCP/IP, is recommended.

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Course programme

AUDIENCE: The Voice over IP course is designed for staff who will evaluate, plan, install, configure, administrate or support VoIP products and networks.
PREREQUISITES: Delegates must have a good understanding of the TCP/IP protocol suite and of IP addressing prior to attending. Course 315: Internetworking with TCP/IP, is recommended.
DURATION: 3 days.
OBJECTIVES: Voice over IP (VoIP) is now a major growth sector within IT and telecommunications. VoIP is revolutionising both industries, and is driving organisations to unify their voice and data networks.
Internet service providers are now competing head-on with traditional Telcos by offering Internet telephony and video conferencing services.

Voice over IP not only offers substantial cost savings, but also allows the development of new applications that can dramatically enhance customer service and organisational efficiency.
COURSE CONTENT:
Review of the TCP/IP protocol suite What is TCP/IP?:
The evolution of TCP/IP
Essentials of IP addressing
The US DoD / DARPA architectural model
The Microsoft TCP/IP architecture
Application layer protocols
Internet Protocol (IP)
IP addressing
Address classes A, B, C, D
IP Multicasting
IP Datagram format
Transmission Control Protocol (TCP)
TCP Segment format
User Datagram Protocol (UDP)
UDP Datagram format
Ports and sockets
ICMP, ARP, DNS, HTTP

Overview of VoIP:
Why VoIP?
Markets for VoIP
Who uses VoIP?
Evolution of the PC Phone
Components of a VoIP system
Architectural overview: Terminals, Gateways, Gatekeeper, MCUs
Status of VoIP as an emerging technology

Overview of VoIP:
Why operate voice over data networks?
Voice and data convergence
Why Voice over IP?
Applications for VoIP
Markets for VoIP Who uses VoIP? Evolution of the PC Phone Components of a VoIP system Architectural overview: Terminals, Gateways, Gatekeeper, MCUs Standards employed in current VoIP solutions
The role of Voice Processing.
Status of VoIP as an emerging technology

Review of Voice Telephony:
Telephone system components
Telephone signaling
The Local loop
Voice switches
Echo in telephone networks
Analogue and Digital signals
Traditional digital voice transmission and switching sytems Multiplexing techniques
The speech encoding process
Sampling, Quantisation, Coding, Framing
Silence suppression
Voice coding and compression standards
Adaptive encoding techniques
Coding fax signals
G.711, G.722, G.721, G.723, G.726, G.723
Assessing voice quality
Mean Opinion Scores (MOS)
Detecting flaws in transmitted voice
Employing MOS ratings for codecs and real networks
Assessing Voice Quality
Measurable components
What to test and measure
P.800 / P.861 recommendations
PSQM, PAMS, PESQ
Example voice quality testers for VoIP networks
Overview of H.26x video codecs

Operating Voice over IP:
The issues when operating Voice over IP
Delay, Talker overlap, Echo
Jitter, Packet loss
Out of Order Delivery
The role of Voice Processing and DSP
Real-time Transport Protocol (RTP)
The role of RTP
RTP header in detail
RTP payload types
Real-time Transport Control Protocol (RTCP)
Implementing centralised number and dial plans
Mapping E.164 addresses to IP addresses
Conclusions

Introduction to Voice over IP signalling:
Overview of signalling in PSTN networks
Overview of private network signalling
The major architectures and standards for Voice over IP ITU H.323 IETF SIP / SDP
MGCP and Megaco/H.248

ITU H.32x series standards:
ITU H.323 and related standards
H.320 / H.324 / H.323
H.323 Voice over IP protocol stack
H.225 (Q.931) in detail
Registration, Admission and Status (RAS)
Endpoint registration
H.225 and RAS signals in detail
H.245 in detail
Selecting capabilities with H.245 Call Control
H.323 call setup
Call termination and clearing
H.323 v2, v3 and v4
Fast Connect Procedure
H.235 security extensions
Related H.2xx standards
Related T.xxx series standards

The IETF Framework for VoIP:
IETF initiatives and working groups for Voice over IP
The relevant IETF standards
Session Initiation Protocol (SIP)
SIP server roles
SIP call setup procedures in detail
SIP protocol header
Session Description Protocol (SDP)
Understanding SDP coding
Transport of telephony signalling over IP networks (sigtran)
Interworking SIP and H.323
Other Internet multimedia conferencing over IP protocols:
Session Announcement Protocol (SAP)
Simple Conference Control Protocol (SCCP)
Real-Time Streaming Protocol (RTSP)

ITU / IETF Megaco / H.248:
MGCP and Megaco
Media Gateway Control Protocol (MGCP)
The Media Gateway Reference Architecture
End-to-End call setup
IETF Megaco
Megaco Terminations and Contexts
Megaco Commands
Megaco Packages
Megaco IP phone Media Gateway
The role of Call Processing Language (CPL)

Current status: H.323 vs SIP vs Megaco:

Understanding IP QoS:
Classifying IP traffic
Review of the IPv4 Datagram format
IPv4 Service (TOS) field
Precedence bits
DTR(C) bits
Characteristics of RTP media flows
Classifying packets in IPv6 networks
The need for QoS
IP Integrated Services (Int-Serv)
ISSLL WG
Implementing Int-Serv on IP routers
The problems with Int-Serv
IP Differentiated Services (Diff-Serv)
The Diff-Serv framework
Implementing Diff-Serv
Packet classification for Diff-Serv
Interworking Int-Serv and Diff-Serv
Common Open Policy Service (COPS)

Resource ReserVation Protocol (RSVP):
Resource ReserVation Protocol (RSVP)
Characteristics of RSVP
RSVP simplex operation
RSVP in IP multicast environments
RSVP message propagation
RSVP traffic control modules
Reviewing RSVP operation in detail
Combining RSVP with Weighted Fair Queuing

Implementing IP QoS for Voice over IP:
Providing Quality of Service (QoS) over an IP network
Queuing and Scheduling mechanisms
First-In First-Out (FIFO), Strict priority scheduling, Fair Queuing, Weighted-Fair Queuing (WFQ), Class-Based Queuing, Hierarchical Class Based Queuing (CBQ)
Coping with packet loss
Controlling admission
Employing Random Early Detection
Employing traffic shaping
IEEE 802.1p/Q
Operating IP over ATM networks
Overview of MPLS
The Label concept
MPLS terminology
How MPLS works
MPLS over ATM, SDH and Ethernet networks
Employing MPLS for IP network engineering

Evaluation of Leading Voice over IP Solutions:
Classifying Voice over IP products
Mainstream VoIP manufacturers
Mainstream VoIP Gateways and PBXs
Mainstream IP-based PBXs
H.323 Gatekeepers
Admission control
IP Telephony Call Agents and Softswitches
IP Soft Phones
PC IP Telephony Cards
Enhancements for security firewalls
VoIP test equipment
VoIP product interoperability
IMTC iNOW! Compatibility Program
VoIP network and product testing
VoIP products from leading vendors, including Cisco, Nortel, 3Com, Avaya, Mitel, NEC, Siemens, Clarent and others

Planning and design of a VoIP solution:
Cost-benefits analysis for Voice over IP
Trunking voice over IP
Replacing existing PABXs
New installations
Advanced and Call Centre installations
Conducting a six-phase feasibility and cost-benefits analysis for Voice over IP
Six-phase planing and design methodology
Determining bandwidth requirements for Voice over IP
Understanding traffic engineering
Combining voice and data traffic effectively
Calculating queuing delays
Sizing link capacity needs and required trunk speeds
Calculating routing delays
Designing for service availability
Prediction of voice quality
Operating VoIP through security firewalls
Operating VoIP with Network Address Translation (NAT)
Interoperating with external networks
VoIP clearinghouses
Open Settlement Protocol (OSP)
In-class case study

Future developments in VoIP:
Dedicated VoIP network segments
IPv6 and VoIP
ATM and Frame Relay versus VoIP
VoiceXML

Voice over IP (VoIP) and IP Telephony Solutions

Price on request