Duration
4 days
Overview
With the widespread global deployment of 4G/LTE, many operators have now launched Voice over LTE (VoLTE) to bring new voice services natively to 4G/LTE networks. The deployment of VoLTE and the IP Multimedia Subsystem (IMS) platform provides an environment for the creation of rich voice & video services.
This hands-on program will provide the participant with a detailed understanding of the protocols and procedures used to deliver Voice and Video over 4G/LTE via the IMS, specifically focusing on the essential building blocks of Session Initiation Protocol (SIP) and DIAMETER.
You will be able to
- Describe the options for Voice in a 4G/LTE network
- Explain the rationale & importance of IMS
- Configure VoLTE/IMS client software
- Understand IMS architecture and operation
- Use a protocol analyser to monitor & understand VoLTE/IMS traffic flows
- Configure user settings in the HSS
- Identify QoS requirements for IMS
- Configure voice roaming
- Explain the voice security framework
- Understand IMS/PSTN interworking
Who can benefit
Technical managers, consultants, communications professionals, Access and Core system engineers, network planners for 3G/4G.
Pre-requisite knowledge
It is essential that the participants have a good knowledge of the fundamentals of IP. The participant should have successfully completed the Certified IP Associate (CIPA) and understanding LTE practical and theory assessment.
Outline
Introduction to VoLTE & IMS
- Use of IP in IMS
- Mobile evolution to IMS
- IMS service delivery model
- Delivering Voice in 4G networks
- Circuit switched Fallback (CS-FB)
- Voice over LTE via Generic Access (VoLGA)
- Voice over LTE
Real-time traffic delivery
- Sampling, coding and codecs
- Real-time traffic requirements
- Real-time Protocol (RTP)
- Real-time Control Protocol (RTCP)
VoLTE/IMS System Architecture
- Architecture & interfaces
- Key components & functions
- Operation of the Call Session Control Function (CSCF)
- Role of the ISIM
- IMS application servers
- IMS security architecture
- The Home Subscriber System (HSS)
- Session Border Control
Introduction to SIP
- SIP architecture
- Standards for SIP and related protocols
- SIP Addressing
VoLTE/IMS Protocols & Procedures
- The SIP protocol
- SIP Methods & Responses
- Session Description Protocol (SDP)
- SIP Extensions for IMS
- DIAMETER Protocol & Applications
- Operation of DIAMETER
Policy and Charging Control
- Evolution of 3GPP Policy Control
- Policy and Charging Control
- QoS Policy
VoLTE/IMS Applications
- Detailed VoLTE/IMS voice call signaling flows
- Detailed CSFB voice call signaling flows
- SMS and Instant messaging over LTE
- VoLTE/IMS and Circuit Core/PSTN Interworking
- VoLTE/IMS roaming architecture
Programme scope, delivery arrangements and suitability are confirmed during enquiry.