Understanding MultiService Access and H.248

2 Day Course
Code PWL021

This course has been retired. Please view currently available Next Generation Network Training Courses.


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Introduction To Next Generation Architecture (7 topics)

  • Current generation switching
  • Next generation IP Infrastructure
  • Access with PPPoA dn PPPoE
  • Switch Control protocols and interfaces
  • Switching Control: General Switch Management
  • Switching Function: MPLS and CES
  • Gateway Control : MEGACO/H.248

PPPoE Fundamentals (22 topics)

  • 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
  • IPCP and LPC peers
  • Linking to Service Providers
  • L2TP and other service provision
  • Maximum receiver unit considerations
  • PPPoE Active Discovery Initiation (PADI)
  • PPPoE Active Discovery Offer (PADO)
  • PPPoE Active Discovery Request (PADR)
  • Active Discovery Session-confirmation (PADS)
  • PPPoE Active Discovery Terminate (PADT)
  • PPP Session Stage
  • LCP Considerations
  • Security Considerations

Gigabit Ethernet and VLANs (10 topics)

  • 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 Delays
  • Proprietary extensions: PortFast
  • VLAN Trunking
  • 801.1Q
  • Selection of VLAN Identifiers

Precedence and Quality of Service (9 topics)

  • Mechanisms for QoS
  • Layer 3:
  • RSVP
  • DiffServ
  • MPLS
  • MPLS experimental Bits
  • Layer 2: 802.1P
  • Bits in shim header
  • Delivering QoS

Carrying Multimedia Conferences over IP (12 topics)

  • Voice over IP Concepts
  • Control Plane
  • Information Plane
  • Signalling functions
  • RTP
  • CODECs and Encoding Media
  • RTCP
  • Example SIP connection
  • Session Description Protocol
  • Defining media streams
  • Architecture of a Soft Switch

Media Gateway Control Protocol (MEGACO/H.248) (25 topics)

  • H.248 standards and versions
  • Components of MEGACO
  • Contexts
  • Terminations: trunks, lines and media streams
  • Root Terminations
  • Identities
  • Notifications
  • Events
  • Replies
  • Digit maps
  • Statistics
  • Commands
  • Add
  • Subtract
  • Modify
  • Service Change
  • Audit
  • Setting up a connection
  • Constructing a context
  • Adding terminations
  • Signalling on/off hook
  • Dialed digit detection
  • Terminating a connection
  • Subtracting terminations
  • Removing contexts

Analyzing Traces of MEGACO Call Flows (13 topics)

  • Call between two residential gateways
  • Call between Residential Gateway and Trunking Gateway
  • Call between two Trunking gateways
  • Call between Residential gateway and SS7 trunk in TGW
  • Call between ISDN trunk in TGW and SS7 trunk in TGW
  • Call from residential gateway to H.323 Terminal
  • Call from residential gateway to SIP user
  • MGC registrations: accepting and rejecting registration
  • IVR Usage
  • Supplementary Service
  • Call Transfer
  • Call Waiting
  • Conferencing


A basic knowledge of IP will be assumed. The necessary IP skills can be gained by attending the one of the following courses.

Additional Learning

The courses below may help you meet the knowledge level required to take this course.

What Our Customers Say

The training was delivered with a high level of expertise and excellence. Instructor was highly knowledgeable.”

Technical Trainer, Aviat Networks

Overall the course was really good, the trainer really understood the material and was very approachable.”

Customer Training Manager, Aviat Networks

Excellent course, informative and well-paced.”

CSE, Cisco

Course was very well outlined. Topics were great and bridged many gaps.”

System Engineer, Cable & Wireless

An excellent intro to video encoding & MPEG transport streams - I would definitely recommend it.”

Broadcast Engineer, Cisco

Definitely an excellent intro. Left me interested in learning more.”

Broadcast Engineer, Eircom

Excellent training course with real examples and practical classroom demonstrations.”

Transport Designer, Orange

Instructor knowledge and experience was excellent.”

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Assistant Engineer, Dhiraagu

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