SIP to Win How to make phone calls over the internet. by Rob Stead www.robstead.co.uk
Quickly Covered <ul><li>Why use VoIP? </li></ul><ul><li>Topography </li></ul><ul><li>Some Terminology </li></ul><ul><li>Tr...
Why user VoIP <ul><li>Cost effective </li></ul><ul><ul><li>Cheap or free – hardware, software and calls </li></ul></ul><ul...
Topography
Topography
Topography
Topography
Topography
Topography
Topography
Topography
Topography
Topography
Some Terminology <ul><li>VoIP – Voice over Internet Protocol </li></ul><ul><li>SIP – Session Initiation Protocol – like ht...
Trixbox <ul><li>Available from  www.trixbox.org  as a downloadable CD image. </li></ul><ul><li>Includes Asterisk, FreePBX ...
Trixbox Demo <ul><li>Using my home test system </li></ul>
Some Issues <ul><li>Call quality – Use dedicated ADSL line and avoid Zap </li></ul><ul><li>Phone system becomes more of an...
Useful Link <ul><li>Trixbox –  www.trixbox.org </li></ul><ul><li>Gradwell –  www.gradwell.com </li></ul><ul><li>Voipon –  ...
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SIP to Win: VOIP telephony

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Rob Stead talks about open source VOIP telephony at London Riders 8 December 2008.

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SIP to Win: VOIP telephony

  1. 1. SIP to Win How to make phone calls over the internet. by Rob Stead www.robstead.co.uk
  2. 2. Quickly Covered <ul><li>Why use VoIP? </li></ul><ul><li>Topography </li></ul><ul><li>Some Terminology </li></ul><ul><li>Trixbox (a solution) </li></ul><ul><li>Trixbox demo </li></ul><ul><li>Some Issues </li></ul><ul><li>Useful links </li></ul>
  3. 3. Why user VoIP <ul><li>Cost effective </li></ul><ul><ul><li>Cheap or free – hardware, software and calls </li></ul></ul><ul><ul><li>Can use ‘normal’ phones </li></ul></ul><ul><li>Flexible </li></ul><ul><ul><li>Expandable </li></ul></ul><ul><ul><li>Great for remote offices and workers </li></ul></ul>
  4. 4. Topography
  5. 5. Topography
  6. 6. Topography
  7. 7. Topography
  8. 8. Topography
  9. 9. Topography
  10. 10. Topography
  11. 11. Topography
  12. 12. Topography
  13. 13. Topography
  14. 14. Some Terminology <ul><li>VoIP – Voice over Internet Protocol </li></ul><ul><li>SIP – Session Initiation Protocol – like http but for VoIP </li></ul><ul><li>IAX – Inter-Asterisk Exchange – like SIP </li></ul><ul><li>Asterisk – Open Source VoIP system </li></ul><ul><li>FreePBX – Open Source switchboard </li></ul><ul><li>Trixbox – Bundled software package to create a VoIP Server </li></ul><ul><li>Trunk – A SIP or IAX connection for making calls </li></ul>
  15. 15. Trixbox <ul><li>Available from www.trixbox.org as a downloadable CD image. </li></ul><ul><li>Includes Asterisk, FreePBX and lots of over useful stuff. </li></ul>
  16. 16. Trixbox Demo <ul><li>Using my home test system </li></ul>
  17. 17. Some Issues <ul><li>Call quality – Use dedicated ADSL line and avoid Zap </li></ul><ul><li>Phone system becomes more of an IT issue </li></ul><ul><li>Trixbox but getting better all the time but issues some time </li></ul><ul><li>Initially complicated </li></ul><ul><li>Requires a little localisation for UK </li></ul>
  18. 18. Useful Link <ul><li>Trixbox – www.trixbox.org </li></ul><ul><li>Gradwell – www.gradwell.com </li></ul><ul><li>Voipon – www.voipon.co.uk </li></ul><ul><li>Voiptalk – www.voiptalk.co.uk </li></ul><ul><li>Zoiper – www.zoiper.com </li></ul><ul><li>Bria – www.counterpath.net </li></ul>

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