• Sigma Telecom


  • We Set Our Limits High


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  • Software


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

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  • Suggestions for Minimizing The Abandoned Calls in Call Centers


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 Europe'20
GCCM Middle East'19
GCCM Africa'19
Capacity Europe'19
Wholesale World Congress'19
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Be globally ahead

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The Blog

Sigma Telecom 2020 Facts

Sigma Telecom 2020 Facts – The Year Of Success Stories

We have completed a successful and enjoyable year! Even though we had a hard time due to Covid-19; as the Sigma family, we always kept our self-motivation high! We will

Call Recording Software

Features of Call Recording Software

The call recording software allows you to record phone conversations in a digital audio file format like PSTN or VoIP. It also gives you the ability to retrieve, store, and

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Suggestions for Minimizing The Abandoned Calls in Call Centers

Abandoned calls are where a caller hangs up while waiting on hold for a customer support agent. By evaluating your call abandonment rate, you will gain useful insight into the

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A Guide For VoIP Security: Protect From Threats

In business life, VoIP phone systems have become tremendously popular; because this system offers simplicity and affordability in business communication. The advantages of these telephone systems have been spread worldwide;

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Everyone Is Preferring Dark Mode: Reasons

Whether in a literal sense or only for their application screens, the dark mode is the new trend among millennials. To be frank, the present condition and increasingly deteriorating economic

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11 Tips On Proper Etiquette For Corporate Messaging

Generally, monitoring our telephones is a routine. So, it can be incredibly successful to use messaging for professional reasons. Failing to observe simple SMS etiquette, even with all the power

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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