TeleSpeak for Digium Authorized Asterisk Training

TeleSpeak is one of the most active Digium Authorized Training partners in the world - with classes regularly scheduled in the UK, Belgium and the Netherlands in addition to adhoc training delivery in many other parts of the world.

5 out of 5

(16 reviews)
  • Buy Now

  • Certified

  • Supported


  • Hundreds of people already successfully taught
  • Digium themselves have used TeleSpeak training service on a number of occassions
  • Classes delivered by a dCAP Asterisk specialist, who is also a qualified trainer


  • Paid
  • Asterisk Fast Start class - £1997
  • Asterisk Advanced class - £2997


Trust TeleSpeak to fulfil all of your Asterisk training requirements.
Started by David Duffett, a dCAP certified Asterisk specialist and professionally qualified trainer (who still delivers quite a few of the classes himself), TeleSpeak is the best choice.
Whether you need one of the Digium Authorized classes [the Asterisk Fast Start - 3 day introduction or the Asterisk Advanced class - a 4.5 day interactive learning experience for those who already have a little Asterisk knowledge] or some kind of custom training, TeleSpeak will deliver.

Asterisk Fast Start - a 3 day introduction for those new to Asterisk (includes an introduction to Linux and Telephony).

Asterisk Advanced - a 4.5 day interactive learning experience for those that have had some exposure to Asterisk

The dCAP (Digium Certified Asterisk Professional) test - your way to benchmarch your Asterisk skills and knowledge with the best.

The Asterisk SIP Master class - A 5 day intensive class for those wishing to take their Asterisk deployments to the next level (includes the use of a SIP Proxy server, Presence, etc.) - delivered in association with EdvinaAB

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Reviewer: cwoolmer

about 1 year ago

I received the Fast Start training course from this company and the trainer David Duffett. The training was of the very highest standard, in fact one of the best I have attended. Very clear guidance at every step, helpful asides and digressions where appropriate. The pace was excellent and the level appropriately pitched. I would have no hesitation in recommending this course.

Reviewer: ikane

about 1 year ago

These guys know VoIP, Asterisk, and, maybe most importantly, are involved with the communities surrounding the technologies. The course was engaging interactive, the class size small - exactly the setting to get up to speed or to take a deep dive into the Asterisk platform. As others have mentioned there was no want for equipment. Mike and David have put a lot of thought into providing an environment conducive to learning. I traveled across the Atlantic for Asterisk training, and highly recommend TeleSpeak to anyone who is considering Asterisk training. Mike and David are a pair of world class gentlemen to boot.

Reviewer: stephentyers

about 1 year ago

Excellent training course. I'm a complete newbie to the world of Asterisk and open source, this was the perfect introduction to this awesome platform. The classroom size was small, which enabled everybody to get individual attention. The classroom equipment was first rate. Each student was provided a number of handsets and methods of connecting to the PSTN which really simulated a real world scenario. The training was delivered in a very engaging style. I felt after 3 days of training I had a great understanding of the capabilities of Asterisk as well as being able to configure a system. Looking forward to doing the advanced class. Thanks David and Mike.

Reviewer: aholding

over 4 years ago

One of the best training/certification courses i have been on. The class size was small enough to have a really personal and interactive experience. David Duffet is a very effective trainer, he can speak about very complex ideas in simple language - the sign of someone who truly understands the subject. Overall i strongly recommend if you are considering undertaking the Asterisk Advanced course to take out your training with Telespeak.

Reviewer: mfalconer

over 6 years ago

Our application uses asterisk as the back end, our default dialplan worked ok for most customers, however some customers wanted some more complex dialplans. I wish I had been able to attend this course much much sooner. The login on how and why things work a particular way is explaned, the background information is explained. Without a doubt David has delivered one of the best value add courses I have ever attended. Thanks I have already recommended Telespeak to some business partners already.

Reviewer: nano

over 6 years ago

The training was just great, I had no previous experience of Asterisk and after 5 days I feel happy and confident about what I learned. David is a very polite and nice person and as a teacher you can tell he´s really interested in the Asterisk and will be more then willing to share his knowledge with you. The training was both useful and fun, I felt welcome and very taken care of since the first handshake. If you are about to have a go on the Asterisk, make sure to learn all about it through TeleSpeak´s excellent training.

Reviewer: cedschmi

over 6 years ago

It was a fun and amazing experience !!! An excellent entry into the world which proves to be exciting of Asterisk. Thank you David for making the course attractive, lively and exciting. I met a lot of trainers and those like you are very rare.

Reviewer: robcornes

over 6 years ago

I cant speak highly enough of this training, all my colleagues have asked me how was the training course? my response, fantastic. David is a great trainer and with his passion for asterisk and superb telphony knowledge the course was fun and very informative. I have come away still reading through my training material which is also very good. Thank you David.

Reviewer: jasonkeane

over 6 years ago

I spent a week with David on one of his advanced dcap courses, Daivd is an outstanding trainer, He has an unrivaled passion & knowledge for all things Asterisk, he adds just the right amount of professionalism and fun to get you through an otherwise tough course. I would have no problem in recommending David as your one stop shop for all things Asterisk !

Reviewer: leehill

over 6 years ago

Great pace to the training, very imformative, surprisingly fun and great value for the money. David is a very good trainer, and is willing to take the time to make sure things sink in. Would definately recommend to anybody interested in learning Asterisk.

Reviewer: omid_mohajerani

over 6 years ago

The best training Class I ever had ( with David Duffet in telespeak ). That was very useful for me . Telespeak will be your first choice to learn asterisk and get your dcap certification . -- Omid

Reviewer: sshvetsov

over 6 years ago

The best training course I've had, period. David is an excellent teacher. He makes sure his students understand the material, ask questions, yet cover all important topics without being sidetracked. And all of that while still having fun. I highly recommend TeleSpeak to anyone who wants to master Asterisk. -- Sergei

Reviewer: nutsoa

over 7 years ago

I am french speaking and had very bad spoken english, but had no difficulties to follow the training David gave us in english. I have a great souvenir of that time passed near Brussels thanks to Eye Pea company that have organized the training. David is very knowledgeable and patient. He have really a skill for animating trainings. I had a lot hesitations to follow that course but actually i am totally satisfied by what we had. As soon as i came back to my office i was able to instal and manage Asterisk. David thank you for this moment as effective and enjoyable !

Reviewer: llyons_kerio

over 7 years ago

I attended this training a few months ago, after having inherited an asterisk server that was configured by another person. As a result, we have now embarked on a project to redefine our internal dialplans, all of our extensions and our special functions. There are also many new functions that I have been able to introduce. David is a very talented and charismatic tutor, not only describing the situation clearly and effectively, but helping the students to understand and fix problems that have occurred during their work. I found his style of teaching to be very compatible with my style of learning and freely admit that this was one of the best trainings I've ever attened. Forget Learning Tree or Cisco (all of which I have attended in the past), TeleSpeak's Digium training is where it's at.

Reviewer: tad

over 7 years ago

I've just had the training and it was very good. One of the best trainings I've ever had.

Reviewer: cogs66

over 7 years ago

Hi Just a quick note to say thank you very much to Telespeak for a fantastic weeks training. It was informative and fun! First class. Andy Vostech Ltd

TeleSpeak Ltd


TeleSpeak is based in the UK and is dedicated to Asterisk training, support, consultancy and selected product supply.

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Digium Certified

Digium offers certification of selected products to ensure their interoperability with Certified Asterisk as well as Digium's other products. A Digium certified product provides an assurance of quality and interoperability of the product with Asterisk.