• Sigma Telecom


  • We Set Our Limits High


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  • Sigma Group has moved to a new office location in Istanbul – Atasehir

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  • How to Get Better VoIP Call Quality?

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We Are

Sigma Telecom. Founded in 2003 to provide advanced telecommunication infrastructure services including; optimization, planning and drive testing.

We Do

High quality and exclusive voice and SMS service; provided by our team of experts. Alongside software and mobile solutions; for both iOS and Android platforms.

We Achieved

Connections with over 500 companies globally, 400M+ minutes of voice carried per month, recognized amongst the biggest mobile operators in Turkey and a sector member of International Telecommunication Union (ITU).

Indispensable Values That Describe Us



At Sigma, we have a fully dedicated, self-motivated, multi-national team. Hailing from all around the world; bringing new cultures and points of view to our company. This diversity allows us to see things from a wider perspective.

Being A Lifetime Learner

For a Sigma employee, learning is a process that never ends. We know that we have a lot to learn from our partners and each other about business and life itself. For this reason, Sigma Telecom invests in its employees' education to improve its talents and promote lifelong learning.


We gain from the combination of our unique diversity and education which leads to our irresistible passion for innovation. We love to use advanced approaches and focus on a variety of aspects to create modern and exciting projects.


We are fair to our employees, business partners and customers. We care about the relationships that we have. This formula has allowed Sigma Telecom to make long lasting and mutually beneficial business partnerships.


Services that 100% guarantee reliable and lucrative partnerships lead to absolute success. We provide first class telecom services, with 24/7 NOC support. Our added value & continuous support deliver a great experience for our partners and we love to exceed these expectations.

We are connected with 500+ companies globally

Some Of Our Partners

And many more!

We are everywhere. Meet us!

Latest Events

GCCM Middle East'19
Capacity Europe'19
Wholesale World Congress'19
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The Blog

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Why Should Your Business Use SMS/MMS Messaging?

Are SMS/MMS services being used by your company? If not, it's time for this to be considered! It has never been simpler or quicker to involve the clients. For a

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What is SIP Calling? – How Does It Work?

Bad communications hurt economically for businesses.  Even though you are able to minimize this somewhat by employee involvement, it is also a good strategy to take a look at your

How to Get Better VoIP Call Quality?

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The 3 Major Types of Phone Systems

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VoIP or PSTN: Which System Is Beneficial?

The transmission of voice calls over the telephone is Voice over Internet Protocol (VOIP). In this, optical packets are coated with audio signals and distributed over the internet. They turn