Course Name: VoLTE On-line live Instructor Led - WebEx

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Course Length: Two, 8-hour, live sessions


Description: The purpose of this course is to provide an understanding of Voice over Long Term Evolution (VoLTE). The course will give you the knowledge necessary to understand evolving telecommunications networks driven by the IMS (IP Multi-media Subsystem), defined by the 3GPP. IMS is an architecture that enables network operators to offer their subscribers multimedia services based on, and built upon, Internet applications, services and protocols. VoLTE uses this architecture to provide High Definition Voice and Video as the network continues to evolve. The course covers the basic terms/concepts and explains IP (Internet Protocol) architectures and protocols such as SIP (Session Initiation Protocol), SDP (Session Description Protocol), RTP (Real-time Transport Protocol) that are used to implement VoLTE.

What You Will Learn: This course examines the key concepts, terms and protocols of VoLTE and IMS. In addition, it provides an understanding of SIP, SDP, and RTP protocols and an overview of Diameter, ENUM, H.248 protocols and message flows defined for VoLTE.

Who Will Benefit From This Course: This course is for individuals responsible for, or involved with, network planning, engineering, interconnection, technical support or network operations.


Course Outline:


         VoLTE Architecture and Functionality

  LTE Architecture and Entities

  LTE Attach and associated procedures

  IMS Concepts

·         Naming and Addressing Concepts

·         Identification of Network Nodes

·         Identification of Users

·         Mobility Related Concepts  

  IMS Session Control Functions

ü  IMS Session Control Functions

·         Interrogating Call Session Control Functions

·         Proxy Call Session Control Function

·         Serving Call Session Control Function

·         Policy Control Function

·         Multi-media Resource Function

·         Breakout Gateway Control Function

·         Application Server (AS)

·         Home Subscriber Server (HSS), Subscriber Locator Function (SLF)

·         Media Gateway (MG)


  Call Session Control Function Procedures

  Registration Procedures

  De-Registration Procedures

  IP Multi-media Session Procedures

  Interworking with PSTN

  Origination Procedures

  Termination Procedures

  Telephony Application Server (TAS)

  Service Centralization and Continuity Application Server (SCC AS)

  Voice Call Continuity (VCC)

  IMS Centralized Services (ICS)

  Internet Protocol (IP)

  H.248 Protocol


  Quality of Service Class Identifier (QCI)

  Allocation and Retention Priority (ARP)

  Enhanced Voice and Video

  Wireless LAN (WLAN) Interworking w/ 3GPP

  Diameter Protocol

  Real-time Transport Protocol (RTP)

  Real-time Transport Control Protocol (RTCP)


  PSTN Signaling


         VoLTE and Session Initiation Protocol

  SIP standards

  Register Servers

  Proxies Servers

  Structure and syntax

  Message Content message headers and body

  SIP Methods








  SIP Headers

         Mandatory Headers

         Other Headers

         3GPP Specific Headers

  Response Codes

  SIP Transactions


  Instant Messaging

  Session Description Protocol (SDP)

  Call Flows


         Session Mobile Originating while Roaming

         Session Mobile Termination while Roaming

         Mobile Initiated Release

         Mobile Terminating in Circuit Switched (CS)

         Mobile Originated Cancel or Resource Unavailable

         ICS (IMS Centralized Services) Registration CS access

         ICS De-Registration

         Subscribe and Notify

         Short Message Service over IP


Exercises: Exercises are provided in the course, re-enforcing a practical understanding of the material and analysis of the protocols described.


Course Prerequisites: Basic knowledge Wireless telephony and signaling would be helpful, but not essential.

Instructors: All of our instructors have years of experience developing and teaching technical courses at Telcordia Technologies (Bellcore) Learning Services in Lisle, IL. They are all CompTIA CTT+ Certified Professionals.

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