Disaster Recovery ‘Expanded detail’

Disaster Recovery – Last resort?

Number Consolidation

Virtual Presences

Trunking Variations

Single Site, No ‘Forklift’

Single Site, TDM PBX

Single Site, Converged

Converged – SIP/IP PBX

Multiple Site, ‘Converged’

Multiple Site, ‘Converged’ + central SBC

Multiple Site, ‘Converged’ + Multiple SBCs

Media Gateways

SIP PBX to Non-SIP PBX

SIP PBX to Non-SIP PBX, Call Flow

SIP Trunk Performance

Connection types

The ADSL issue

Codecs, Voice and Data

Symmetric DSL (SDSL)

Bandwidth Calculator

Testing your link

ADSL Developments

Fibre Options

SIP Trunking, MPLS and SD-WAN

MPLS, basic explanation

MPLS Label format

MPLS in a MAC frame

MPLS example network

MPLS benefits

Your own private WAN

but ‘Not the only client’

Separate MPLS networks

VPLS explained

WAN Optimization, Hybrids and SD-WAN

Software Defined WANs explained

Security and SIP Trunking

SIP Trunk Security - Overview

Session Border Controllers

More on SBCs

The ‘corporate’ SBC

SIP REFER issues

Setting up a SIP Trunk

Add a VoIP Provider

Provider SIP Servers

Authentication

Add a Dialling Rule

Trunk setup complete

Call out Trace

Comparing SIP packets from two ITSP providers

Skype for Business and SIP trunks

‘Optional’ Lab exercises

Skype for Business ‘Network Environment’

Topology Builder

Control Panel

Management Shell and basic commands

Installing Skype for Business Client

Making Calls

Using Wireshark to monitor calls from a Skype network environment to the PSTN across a SIP

trunk

Some PBX Requirements

Enterprise PSTN Identities

P-Preferred and P-Asserted

Call Progress Tones

Troubleshooting and Interops

SIP Trunks and Common Problems

Choosing an ITSP

Understanding ITSP Offerings

'Sticking points’?

What you may need in the future

SIP trunk ‘connectivity’

Things to watch out for when connecting to your ITSP

‘Finding’ an ITSP

SIP trunking Checklist for ITSP evaluation

Working together

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