VOIP - Protocols, Gateway Design,
Phone Config, Analysis (half day)
Individual tuition & online personalized
training
1.
VOIP
– Module 1 - SIP and RTP Protocol Intro
(half day)
Functions of SIP messaging
Call control protocols:
SIP, H.323, MGCP
SIP: the dominant peer-to-peer call control protocol
Logical SIP entities: Registrars, proxies, redirect servers,
location databases
SIP protocol structure; Transport protocols (TCP, UDP, TLS)
SIP methods & response codes
Session Description Protocol (SDP)
Codecs: Definition, variants, benefits and drawbacks of each
Functions of RTP (Real-time Transport Protocol)
RTP protocol structure
RTP packet flow
cRTP (compressed RTP)
SRTP (call encryption)
2.
VOIP
– Module 2 -
VoIP PABX and Gateway Principles
(half day)
The Private Branch Exchange (PABX/PBX)
How call switching works in a
SIP environment
VoIP gateways:
Analog (FXO) and digital (E1/ISDN)
Example gateway configuration: Audiocodes and Quintum FXO
gateways
FXS (ATA) gateways
Example gateway configuration: Audiocodes and Cisco FXS gateways
Outbound and inbound VoIP call
flow
3. VOIP – Module 3 -
IP Phone Config & Deployment in SIP environments (half
day)
Functions of IP phones
Intro to Polycom IP phone configuration
Intro to Cisco IP phone configuration
Using DHCP options to autoconfigure IP phones
Example TFTP configuration: Polycom phones
4.
VOIP
– VoIP Network Design, Analysis and Troubleshooting (half day)
Ensuring QoS (Quality of
Service)
Implementing VLANs
Diagnosing VoIP issues – Packet loss, jitter, echo, delay
Examples of VoIP call quality issues
Monitoring tools and techniques for VoIP environments
NOTES:
As concepts are explained, various demonstrations
and examples for students to work through are supplied.
The examples start by detailing the exact
steps involved, and increase in difficulty by supplying less
information
Concepts are then reinforced with many
scenarios/challenges
