H.248 / BICC in the Circuit Swiched Core Network - Trouble Shooting and Protocol Analysis
[3-day course, Euro 3,450.- (net) per participant]
INTRODUCTION AND PROTOCOL OVERVIEW
- Review of the Protocol Architecture
- Circuit Switched Core Network Interfaces and Components changes release 4/5 (reason for introduction of Media Gateway / MSC server, their consequences to transport network layer architecture.
- Different possibilities in CN architecture regarding interconnection of MSC server, Media Gateway.
- Circuit Switched Core Network Interfaces and Components changes release 4/5 (reason for introduction of Media Gateway / MSC server, their consequences to transport network layer architecture.
- Overview of the Protocol stacks in the CS –CN
- The Nb interfac (ATM based and IP Alternative)
- The Nc Interface (ATM based and IP Alternative)
- The Mc Interface
- The Transport Network Control Plane
- The Nb interfac (ATM based and IP Alternative)
- Considering QoS in IP based Networks
- QoS Hierarchy and End to End View
- IP related QoS Technologies
- Why MPLS as QoS mechanism?
- QoS Hierarchy and End to End View
- The Future: All-IP based Network Architecture & SIP
- The IP bearer and SIP / IMS for session setup and control.
- Practical Workshop:
- Introduction to the workshop environment.
- Protocol Tracing with Wireshark / Ethereal.
- Configuration of Filters, how to select the required pieces of information.
- Example: Trace Analysis with a simple call setup over IP.
- Identify the architectural differences, mappings and common functionalities in detail
- Introduction to the workshop environment.
BICC / ISUP IN THE CIRCUIT SWITCHED CORE NETWORK
- Overview of ISUP and BICC
- Functional Overview, Protocol Stack in 3GPP Rel.4
- Discussion of ISUP / BICC use cases
- Which are the important differences?
- Functional Overview, Protocol Stack in 3GPP Rel.4
- Detailed Review of BICC
- Functional Overview, Protocol Stack in 3GPP Rel.4
- BICC Message Header Details
- Mandatory Information Elements, fixed and variable length
- Optional Information Elements
- Review of important BICC Messages – IAM, COT, ACM, ANM, REL, RLC, APM
- Overview of Supplementary Services and Additional Functions / Services
- Signaling Identifiers used by BICC – Protocol, Network, Connection and Group ID's.
- Timer Overview
- Functional Overview, Protocol Stack in 3GPP Rel.4
- Successful Basic Call Setup Procedure
- call setup, En bloc operation, overlap operation, outgoing and incoming bearer setup cases
- Forward / Backward Bearer Establishment
- conversation phase, Suspend and Resume, Forward Transfer, codec modifications and negotiations
- clear down, release by sender, release by receiver, release by the network
- call setup, En bloc operation, overlap operation, outgoing and incoming bearer setup cases
- Practical Workshop
- Discussion of a BICC log file sample
- Completion of a basic call setup message flow by the students.
- Discussion of a BICC log file sample
- Unsuccessful Call Setup Actions
- Actions at CSF, CN, CMN
- Tones and Announcements
- Actions at CSF, CN, CMN
- Review of Abnormal Conditions
- CIC and Group reset procedures
- Handling of unreasonable signaling, message format errors, unexpected messages or parameters, BICC error indication, over length messages
- BICC Timer Expiries, overview, identification and use of timers
- CIC and Group reset procedures
- Interworking
- BICC Interworking
- Interworking with ISUP
- Interworking with other signaling systems and user parts
- H.248 Functions for Remote Media Control, mandatory functions, optional functions
- BICC Interworking
- Practical Workshop
- Discussion of detailed scenarios, Forward and backward bearer establishment, bearer control tunneling, Codec negotiation and collision case, per call bearer establishment, bearer release scenario.
HOW TO CONTROL MEDIA GATEWAY RESOURCES
- Overview of H.248 / MEGACO
- Media Gateway Operation Principles
- Contexts and Terminations
- Media Gateway Operation Principles
- Details of H.248
- The H.248 / MEGACO Command Set – Status, Configuration and Report commands
- H.248 detailed message encoding – ADD, MOVE, MOD, SUB, NOTIFY, AUDIT and SERVICE_CHANGE commands, Descriptors for Media, Modem, Mux, Events, Signals and more.
Analysis of H.248 header, transaction encoding, action request encoding, ADD Request encoding examples.
- Package Definitions, Properties, Events, Signals, Statistics, Procedures
- Tags for Media Stream properties, MUX, bearer, ATM, IP
- The H.248 / MEGACO Command Set – Status, Configuration and Report commands
- Practical Workshop:
- Completion of a given message flow scenario by the student, identification of messages and parameters as an exercise.
- Description of the scenario, i.e. what is happening?
- Completion of a given message flow scenario by the student, identification of messages and parameters as an exercise.
- Encoding of H.248 Messages
- ASN.1 Basic Encoding Rules, TLV Encoding, Packet Encoding
- Encoding Example H.248 ADD Request
- ASN.1 Basic Encoding Rules, TLV Encoding, Packet Encoding
- Practical Workshop:
- Decode of a H.248 MOD Request Message by the Students
- Security Considerations
- Protection schemes, protocol and media
- Authentication Header scheme
- Protection schemes, protocol and media
- Transport over IP
- Application level framing
- Timer handling, RTT, provisional responses
- Use of TCP and SCTP
- Application level framing
- Practical Workshop:
- Review of logfiles captured at the Mc interface
- Analysis and completion of a given message flow, allocate context, common codecs, connection points.
- Discuss possible of error cases.
- Review of logfiles captured at the Mc interface
- Review of RTP / SRTP / RTSP / RTCP
- Operation Overview of RTP and RTCP
- Review of the RTP Header Format – CSRC, SSRC, Timestamp, Sequence Number, Payload Types
- Tasks and Functions of RTCP
- Review of RTP and RTCP Log-Files
- Operation Overview of RTP and RTCP
- Practical Workshop:
- Review of RTP / RTCP files with Ethereal / Wireshark
- Analysis of the content, reproduction of voice samples.
- Discuss security and content encryption issues.
SELECTED BICC – H.248 SCENARIOS
- Mobile Originating Call Establishment
- Review and discussion of the detailed message flow
- Practical Workshop:
- Analysis of a MEGACO log file for MOC establishment
- Identification of MGW parameters by the students
- Analysis of a MEGACO log file for MOC establishment
- Mobile Terminating Call Establishment
- Review and discussion of the detailed message flow
- Review and discussion of the detailed message flow
- Practical Workshop:
- Analysis of a MEGACO log file for MTC establishment
- Creation of the detailed flow diagram by the students
- Analysis of a MEGACO log file for MTC establishment
- SRNC Relocation
- Review and discussion of the detailed message flow
- Practical Workshop:
- Analysis of a MEGACO log file for SRNC Relocation
- Generation of ID lists for each network element by the students
- Subsequent Handover
- Review and discussion of the detailed message flow
- Practical Workshop:
- Analysis of a MEGACO log file for Subsequent Handover
- Summary and identification of all used parameters by the students
- Analysis of a MEGACO log file for Subsequent Handover
- Inter MSC Handover
- Review and discussion of the detailed message flow
- Practical Workshop:
- Analysis of a MEGACO log file for Inter MSC Handover
- Creation of a detailed flow diagram by the students
- Analysis of a MEGACO log file for Inter MSC Handover
v1.4
ℹ️ Try out the updated search below!
Search:
More Info:
General Information to this course
Schedule of this course
Buy this book
INACON eBooks
Please have a look at our full offer
