Hands-On Multi-Service Access and Next Generation Voice Service

Course Description

The next generation of telecommunications networks is being deployed using VoIP technology and soft switching replacing circuit switching and ISDN signaling. By deploying communications as multimedia streams over IP it is possible to extend the services from simple voice to improved voice quality, better bandwidth utilization and expanded services into video and television carried over the same technology. Already cost effective VoIP services have been deployed using H.248, MGCP and SIP over Intranet infrastructures. However to integrate this with existing ISDN and SS7 architectures and eventually to replace local exchanges and transit exchanges in carrier networks requires large scale signaling and switching changes.

The next generation of telecommunications networks is likely to use IP and for efficient and high-speed quality of service switching deploy MPLS to select routes. Across the access interface IEEE 802.1Q will be deployed to deliver VLAN services and Q-in-Q implementation allowing customer and carrier VLANs to be supported. It is also possible that migration eventually to IPv6 will eventually occur.

To build soft switches and distribute the switching function over a carrier level infrastructure, gateways will be controlled using H.248, Media Gateway Control Protocol (MGCP) or SIP. Eventually SIP will evolve to take over as the primary signaling protocols in Next Generation Networks

Students Will Learn

Identify The Market Of Next Generation Services
Describe How Xdsl Functions Today
Migrate Access To Multi-Service And VLAN Operation With Gigabit Ethernet
Describe How MPLS Functions Today
Analyze The Relationship Between MPLS, IP And Vlans
Identify How 802.1Q Can Be Deployed For Carrier And Customer VLAN Support
Discuss How Qos Can Be Delivered Over Access, Aggregation And Core Networks
Discuss The Mechanisms Used To Carry Voice Over IP And How IP May Evolve To Multimedia And TV
Compare SIP, H.248 And Media Gateway Control Protocol To Build Soft Switches
Analyze Protocol Exchanges
And Much More

Prerequisites

A basic knowledge of IP will be assumed.

Course Outline

Module I: Introduction To Next Generation Architecture

Where is the market for Next Generation?

Next Generation Services

Triple Play Networks

Current generation switching

Next generation IP Infrastructure

Switch Control protocols and interfaces

            Switching Control: General Switch Management

            Switching Function: MPLS and CES

            Gateway Control : MGCP/SIP/H.248

Hands-on Demonstration of Multi-services in operation deploying VoIP and IPTV

Module II: Access Fundamentals

Asymmetric digital subscriber line (ADSL)

Modes of operation

Loop requirements of ADSL

Specific requirements for an ADSL system operating in the frequency band above POTS

Dynamic Rate adaptation

ADSL2 G922.3 functional model

Transport Protocol Specific Convergence Functions

ADSL 2+ G.992.5

Frequency band differences

Initialization

Overlapping spectrum operation

PPPoE/PPPoA Advantages and disadvantages

PPPoA operation recap

            RFC1483

            SNAP

            OUI

            Selecting bridging and routing protocols

            VC selection by protocol

PPPoE Architecture

            RFC2364/2516

            Aggregation and links to service provision

            Linking to Service Providers

                        L2TP and other service provision

            Maximum receiver unit considerations

            Security Considerations

Module III: Gigabit Ethernet and VLANs

Evolution of Ethernet

CSMA/CD and its replacement by Switching

Layer 1 presentations

Concept of a LAN and a VLAN

Bridging: 802.1d

Spanning Tree and Rapid Spanning Tree

VLAN Trunking with 801.1Q

Deploying Q-in-Q

Selection of VLAN Identifiers

Aggregation of Gigabit Ethernet Links

Hands-on Deploying Aggregated Ethernet to deliver reliable services

Module IX: Precedence and Quality of Service

Mechanisms for QoS

Layer 3:

RSVP

DiffServ

Layer 2: 802.1P

Bits in shim header

Delivering QoS

Hands-on Demonstration of QoS

Module V: MPLS Fundamentals

Routing options: How do I get from here to there

What MPLS Offers

MPLS Plain Vanilla

            Components: LER, LSR, FEC, LDP, LSP, Labels

Label Distribution and Selection Concepts

            Explicit Routed LSP

            Constraint Based LSP

            RSVP interoperation

Label Distribution Methods

            Downstream Mode

            On Demand

            Independent Mode

            Label Retention Considerations

            Constraints and Label Bumping

            Extensions to RSVP

Extending MPLS for Quality of Service

Constraint based LSP

Link attributes and constraints

Experimental bits in shim header

Delivering QoS

Pseudo Wire Emulation of E1 and Primary rate ISDN TDM Services

Module VI: Evolution of IP

Internet Growth

Routing Problems

Classless and Classful Addressing

Multicasting

IGMP

PIM

Hands-on Demonstration of Multicasting IPTV

IPv4 Features

Packet Delivery Services

Plug and Play Concepts

Auto configuration

Neighbor Discovery

Module VII: Carrying Multimedia Conferences over IP

Voice over IP Concepts

Control Plane

Information Plane

Signalling functions

IP/TCP/UDP

RTP

CODECs and Encoding Media

RTCP

Example SIP connection

Session Description Protocol

Defining media streams

Architecture of a Soft Switch

Hands-on Exercise Analyzing VoIP calls

Module VIII: VoIP using IETF Architecture SIP

Why has SIP become important?

SIP Components

            Register Function

            Command and 3 digit responses

            SIP Addressing

            Connection signaling

            Invite, Cancel and Bye

            Capabilities exchange

SIP Message Format

Comparing SIP and H.323

Hands On Session Voice Over IP Working using SIP

            Set up and use VoIP applications on each PC to place calls across the classroom

            Experience Different IP environments and observe VoIP performance issues

            Observe Network Performance Using Netmeter

Module IX:Delivering Voice Services

Motivation: Why use VOIP

Comparison between current voice and data networks

One Integrated Network

Sharing resources

Migration

Where VOIP can be deployed

Integration at the PBX

Integration at the PC

Integration at the desk with IP phones

Which IP Network

Internet Telephony

VOIP over an Intranet

Internet Telephony Service Providers

Hands-on SIP Proxy Controlled Services

Module X: Session Description Protocol

Evolution of SDP

SDP Syntax

- Using SDP to negotiate media channels

- Identifying media streams

- Constructing ephemeral connections

- Carrying DTMF signals

- CODECs and Media streams

Hands-on Observing SDP exchanges in calls

Module XII: Evolution of SIP to SIP-T

Limitations of basic SIP

- Impact of signaling packet loss

- Alternative operation to remove limitations

- Positive acknowledgements

- Carriage over TCP

- Carriage over SCTP

Example operation of SIP-T exchanges

- SIP-T Implementation Agreements

Module XIII:MGCP, Megaco and H.248

Evolution of Megaco from MGCP

Megaco Components

- Contexts and Terminations

- Properties and Packages

- Constructing a call over and NGN

- Using ephemeral connections

- Megaco call exchanges between residential gateways

- Megaco controlled call between a SIP phone and residential gateway

Hands-on Examining a MEGACO Captures

Module XIV: SIP-I for Carrier Operation

What is SIP-I?

- Signaling boundary functions

-Bearer Independent Call Control Protocol (BICC)

- ISDN User Part (ISUP)

- Carriage of BICC and ISUP functions over SIP

- Q.1912.5

ETSI TS 186 002-2 Test Suite Structure

Mapping SIP-I to SS7 ISUP functions

- Inter-working examples for Supplementary Services

Summary and Review

Delivery Method

Instructor led with numerous Hands-On labs and exercises.

Equipment Requirements
(This apply's to our hands-on courses only)

BTS always provides equipment to have a very successful Hands-On course. BTS also encourages all attendees to bring their own equipment to the course. This will provide attendees the opportunity to incorporate their own gear into the labs and gain valuable training using their specific equipment.

Course Length

4 Days