Date post: | 19-Oct-2014 |
Category: |
Technology |
View: | 1,762 times |
Download: | 1 times |
SIP to Win
How to make phone calls over
the internet.
by Rob Steadwww.robstead.co.uk
Quickly Covered
• Why use VoIP?• Topography• Some Terminology• Trixbox (a solution)• Trixbox demo• Some Issues• Useful links
Why user VoIP
• Cost effective– Cheap or free – hardware, software and calls– Can use ‘normal’ phones
• Flexible– Expandable– Great for remote offices and workers
Topography
Phone System
BT ExchangeBT Phone
Topography
ZAP
ZAP
Phone System
BT ExchangeBT Phone
Topography
ZAP
ZAP
Phone System
BT ExchangeBT Phone
The Internet
Topography
ZAP
ZAP
Phone System
BT ExchangeBT Phone
The Internet ISP Who Provides VoIP
Topography
ZAP
VoIP Server
BT Exchange
ZAP
BT Phone
The Internet ISP Who Provides VoIP
SIP
Topography
ZAP
VoIP Server
BT Exchange
ZAP
BT Phone
The Internet ISP Who Provides VoIP
SIP or IAX
Topography
ZAP
SIP
IAX
SIP
SIP
ZAP
VoIP Server
BT ExchangeBT Phone
The Internet ISP Who Provides VoIP
SIP or IAX
BT Phone
SIP Phone
BT Phone
BT Phone
Topography
ZAP
Softphone
Wi-Fi Phone
SIP
IAX
SIP
SIP
ZAP
VoIP Server
BT ExchangeBT Phone
The Internet ISP Who Provides VoIP
SIP or IAX
BT Phone
BT Phone
BT Phone
BT Phone
Topography
ZAP
Wi-Fi Phone
SIP
IAX
SIP
SIP
ZAP
VoIP Server
BT ExchangeBT Phone
The Internet ISP Who Provides VoIP
SIP or IAX
BT Phone
SIP Phone
BT Phone
BT Phone ISP Who Provides VoIP
ISP Who Provides VoIP
Softphone
Topography
ZAP
ENUM
Wi-Fi Phone
SIP
IAX
SIP
SIP
ZAP
VoIP ServerBT Exchange
BT Phone
The Internet ISP Who Provides VoIP
SIP or IAX
BT Phone
SIP Phone
BT Phone
BT Phone ISP Who Provides VoIP
ISP Who Provides VoIP
VoIP Server
Softphne
Some Terminology
• VoIP – Voice over Internet Protocol• SIP – Session Initiation Protocol – like http but for
VoIP• IAX – Inter-Asterisk Exchange – like SIP• Asterisk – Open Source VoIP system• FreePBX – Open Source switchboard• Trixbox – Bundled software package to create a VoIP
Server• Trunk – A SIP or IAX connection for making calls
Trixbox
• Available from www.trixbox.org as a downloadable CD image.
• Includes Asterisk, FreePBX and lots of over useful stuff.
Trixbox Demo
• Using my home test system
Some Issues
• Call quality – Use dedicated ADSL line and avoid Zap
• Phone system becomes more of an IT issue• Trixbox but getting better all the time but
issues some time• Initially complicated• Requires a little localisation for UK
Useful Link
• Trixbox – www.trixbox.org• Gradwell – www.gradwell.com• Voipon – www.voipon.co.uk• Voiptalk – www.voiptalk.co.uk• Zoiper – www.zoiper.com• Bria – www.counterpath.net