SIP topics covered in SIPsense training

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SIP
Basics

SIP
Foundation

SIP
Advanced

SIP Basics

For Tier 1 Engineers, Sales and Managers

SIP Foundation

For Tier 2 Engineers and Technical Sales

SIP Advanced

For Tier 3 Engineers and Developers

Typical study time

~ 1 hour

~ 40 hours

~ 60 hours

Foundation SIP

What is SIP?

SIP devices in the SIP network

Why SIP?

Simple Call analysis

SIP User Agents

First SIP Call – 7 message call setup

SIP requests and the request construct

The request start-line

Message body & media options

Call-ID

CSeq header and transactions

Parsing payload: Content-Type & Content-Length

Identifying caller and callee

SIP responses

Provisional responses

100 Trying & reliable delivery

Reliable delivery and request retransmissions

Routing responses

The 180 Ringing

Other provisional responses

Accepting the INVITE

Success responses

Final responses

The INVITE transaction

Negotiating media

The ACK

Subsequent requests

Session establishment

Terminating the session

Error responses – rejecting a call

Hold / off hold - the reINVITE

Adding video to a voice call

Cancelling a pending request

The OPTIONS request - seeking capabilities

OPTIONS as heart-beat

SIP timers

Registration and Location

The need for SIP servers

SIP addresses

SIP registration

SIP location

Registration expiry & re-registration

Un-registration

The REGISTER request

Third party registration

Proxy processing

Request routing

Location & contact resolution

Routing responses

Routing the ACK - route sets

Stateful / stateless servers

Multiple contact addresses

Location & forking

Q values

Forking & branches

To / From tags

Dialogs, transactions & calls

Dialog state

Registration rejection

Registration confirmation

Routing

Inter-domain SIP location

Routing subsequent requests

Registration confirmation

Forcing a route: the Route header

Looping & spiralling

Server failure responses - 5xx & 6xx

Redirection

SIP redirection

Redirection responses

Recursion on redirection

Redirection servers: subsequent responses & requests

Security

Secure SIP

Breach of security

SIPS & routing

Security realms

Denial of service attacks

Tunnelling encryption

Extensibility & SIP services in deployed networks

Custom messages & headers

The B2BUA

Third party call control

Interacting with the caller: the media/IVR server

Mixing media streams: the media bridge

Conferencing

Conference features

Video conferencing

Quality of service - bandwidth managment

IP PBX (include routing rules)

IP PBX features

The half-call model

Session management & feature application

Network borders - the access layer

The IP multimedia subsystem (IMS)

The SIP application server

Voicemail

Event notification - subscribe, notify & publish

Least-cost routing

Policy enforcement

The administration layer

Interop with the outside world

Interop with the PSTN – the PSTN gateway

SIP trunks

SIP over the public internet – the need for a session border controller (SBC)

Media transcoding – the media gateway

SIP & WebRTC

SSC Certification

SIPsense Certified (SSC) exam & certification

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