Voice Technologies Introductory
Overview A detailed and in-depth Introduction to Voice Technologies. Duration - 2 Days.
Who will benefit
Network/Systems engineers/Operators/Planners, or any personnel who require an In-depth understanding of Voice Technologies.
Prerequisites
None.
By the end of the course delegates will be able to describe:
By the end of the course delegates will be able to describe: • Voice and Data Convergence • Voice, Standards and Numbering Plans • Voice Compression • Voice over Frame Relay, ATM and IP Networks • VoIP Enhancements
Course Content
Introduction Voice & Data Convergence Voice over IP Voice Communications Circuit Switched Packet Switched The Numbering Plan for Telephony E.164 Addressing Concepts What is Ipv6 Address Classes Encapsulation with TCP/IP Voice Telephony Voice Telephony Signalling Voice Conversation DTMF Dialling Foreign Exchange Private and Public Networks Q.931 Messages SS7 SS7 Signalling Architecture Public Switched Telephone Network (PSTN) Service Interoperability Delay Post Dial Delay Switch and STP Response Times Call Setup Delays End to End Voice Transmission Transmission Time Allocation Delay Problems Talker Overlap Echo Echo Control Devices Voice over Frame Relay Concept Features Network Interfaces Frame Relay Control Frame Relay Header DLCI Allocations Throughput Guarantee Data Throughput Management VoFRTransfer Support VoFR Service Block Diagram Primary Payloads Signalled Payload Frame Format Sub Frame Format Payload Type Field EADPCM Support Sequence number Coding Type Vocoder Transfer CS-ACELP LD-CELP MPMLQ VoFR Benefits Fragmentation UNI/NNI Fragmentation Interface Fragmentation Formats End to End Fragmentation End to End Fragmentation Format Voice over ATM ATM ATM Cell Cell Advantages ATM Layers ATM Adaptation Function (AAL) Convergence Sublayer (CS) ATM Service Classes Quality of Service Traffic Classes CBR VBR-RT VBR-NRT ABR AAL-1 Used for Class AAAL1 Synchronous Residual Time Stamp (SRTS) AAL1 Adaptive Clock Recovery AAL2 for Compressed Data AAL2 CPS AAL2 SAR AAL2 Example AAL5 for Data Services AAL5 Frame Structure Voice and Telephony over ATM (VtoA) AF - VToA- 0078.000 AF - VToA - 0085.000 CAS AF - VToA - 0089.000 AF - VToA - 0113.000 AF - VToA - 0083.001 Voice over IP ITU H.323 ITU Recommendation H.323 The H.323 Protocol Stack H.323 on ATM H.323 Gateway H.323 Terminals H.323 Gate Keepers H.323 Multipoint Control Units (MCU) Recommendation H.225.0 H.225.0 Scope Registration, Admission and Status (RAS) Gatekeeper Discovery Endpoint Registration H.225.0 Operation Point to Point Call Same Gatekeeper H.245 Call Control Capability Exchange Logical Channels Fast Connect Procedure Terminating a call Call Termination Call Clearing Without a Gatekeeper With a Gatekeeper Real Time Transport Protocol (RTP) RTP The RTP Header The Marker Bit Reduced Overhead Real-Time Control Protocol (RTCP) RTCP Packet Types Port Number Assignment Firewalls Full Duplex Security	Standards Bodies International Telecommunications Union (ITU) ATM Forum ATM Forum Founder Members Aims Frame Relay Forum The Internet Architecture Board VoIP Forum Voice over IP (VoIP) Quality Quality of Service Model Multimedia Services Standard Bodies Voice Compression Voice Conversion Digital Voice PCM Components of Speech Silence Suppression Coding Techniques DPCM ADPCM Voice Compression G.723.1 MOS Voice over IP Gateway ITU Q.931 Supplementary Services Gateway Location Emulation Three Styles of Call VoIP Implementations Backbone Cellular Networks GPRS 3rd Generation Evolution The H.32x Family H.323 Benefits VoIP Quality Voice Over the Internet Network Congestion Advanced Services Internet Delay QoS at Present Value Added Services Scalability Congestion Control Classification and Prioritisation Bandwidth Allocation Governing Bodies IP Precedence Priority Queuing Random Early Detection (RED) Weighted Precedence Weighted RED Weighted Fair Queuing IEEE 802.1p/Q ISA Model ISA's 3 Levels of Service The Reservation Protocol (RSVP) RSVP Operation RSVP Limitations ISSLL Common Open Policy Server (COPS) DIFFSERV - Differentiated Services Example Service Provider MPLS MPLS Operation VoIP Enhancements H.323 Limitations H.323v3 H.323 Model Media Gateway Control Protocol (MGCP) Overview of Commands The Notify Command More Intelligence Basic Concepts Call Connection Simple Control Transmission Protocol (SCTP) Backhaul Example Gatekeeper Zones The Gateway Location Problem INow Clearing House Relation to IETF Multimedia protocols SAP - Session Announcement Protocol SIP - Simple Conference Control Protocol SCCP - Simple Conference Control Protocol RSTP - Real Time Streaming Protocol RFC 2326 SDP - Session Description Protocol RFC 2327 The Session Initiation Protocol (SIP) SIP Commands Client-Server Architecture SIP+ Overview SIP Mapping of ISUP Messages Summary Introduction Packet Efficiency Delay Standards Summary of IP & LANs Summary of ATM Frame Relay Delay