• Sigma Telecom


  • We Set Our Limits High


    Learn More

  • Software


  • VoIP Routes – Important Facts for Quality of the VoIP Traffic

    Read More

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
previous arrowprevious arrow
next arrownext arrow

Be globally ahead

We have a few tips for you.

The Blog

Pandemi - Telecom - Covid-19

COVID-19 Pandemic Reflections in Telecom Sector Worldwide

COVID-19, which affects the whole world, continues to affect many sectors as it affects daily life. Naturally, the telecom and communication sector is at the top of the affected sectors.

Sip-484 - Sip-500 - VoIP

Sip-484 Address Incomplete Sip-500 Server Internal Error- VoIP Sip Codes

SIP Errors is the topic of the day in Sigma Telecom Ultimate VoIP Guide. If you get errors about Sip-484 and Sip-500 and don't know what to do, start reading

Remote Working

All About Remote Working – Need to Knows

Nowadays the world is busy fighting the Covid-19 virus and personal precaution is the most important issue to stop the spreading of the disease. One of the very basic and

VoIP Routes - ASR - ACD

VoIP Routes – Important Facts for Quality of the VoIP Traffic

As you know from our previous articles, VoIP, is the transfer of the voice packages via the internet, turning analog signals to digital. For sending these packages, VoIP needs digital

5G Mobile Internet - 5G Turkey - Istanbul Airport

5G Mobile Internet will be launched first in Istanbul Airport for Turkey

5G mobile internet of the mobile operators is still at the testing phase in majority of the world. Infrastructure work for this super fast service, which is used by a

5g speed record - verizon - samsung - motorola

New 5G Speed Record by Verizon with eight-carrier aggregation

It's a fact that there is a bid competence in 5G technology worldwide. Many operators launched their 5G service for a small percentage of their customers and some are preparing

SMS Marketing Strategy - SMS - Small Message Service - SMS Campaign - Send SMS

SMS Marketing Strategy – 10 Crucial Things to Think Before Sending SMS

The traditional ways of marketing almost have come to an end. Different types of marketing ways such as Digital Marketing or SMS Marketing are in great demand due to their

GCCM - Interview - VoIP - Sigma Telecom CEO

GCCM C-Level Interview with Our CEO Musa Rad

At GCCM London, one of the largest telecom conferences in the world, our CEO Musa Rad made an interview for GCCM Magazine that shed light on the future of the