top of page


VoIP Industry is expected to grow around 12% until 2025
There are many rumors about the future of the VoIP industry saying that the end is very close but experts are saying the opposite. Huge...

Sigma Telecom
Nov 3, 20213 min read


We are coming to International Telecoms Week - ITW Atlanta 2019
nternational Telecoms Week, mostly known as ITW, opens their doors in Atlanta this year, 2019, between 23rd and 26th of June. We are the...

Sigma Telecom
Nov 3, 20213 min read


9 False Internet Facts History
Topic of the today is False Internet Facts History . Let’s start to hunt the internet myths now! Internet Facts History 1. First, the...

Sigma Telecom
Nov 3, 20213 min read


True or False? 6 VoIP Myths And The Facts
Are you interested in VoIP business and doing some research about Voice Over Internet Protocol? Ok, but first you should really know that...

Sigma Telecom
Nov 3, 20212 min read


4 Tips For A Battery High Performance For VoIP Apps
Do you want a battery high performance while you are using VoIP applications? No worries! We have some useful tips to extend the battery...

Sigma Telecom
Nov 3, 20212 min read


3 Key Parameters to Monitor For a Perfect VoIP Traffic
Here are the first 3 values to check for having the perfect VoIP traffic. 3 Keys For VoIP Traffic 1.High ACD – Average Call Duration –...

Sigma Telecom
Nov 3, 20212 min read


The Advantages of VoIP Phone System
Do you know the advantages of VoIP phone system that you are missing by not using? We can count many good points about the TDM but...

Sigma Telecom
Nov 3, 20212 min read


The Latest News About New Technologies, 5G, Telecom, Digital Payment
In a very near future we will talk about new technologies such as Industry 4.0, Internet of Things, Artificial Intelligence, Machine...

Sigma Telecom
Nov 3, 20212 min read


6 Critical Questions and Answers About VoIP Business
If you are new in the VoIP Business or want to know some information about it then you on the right page. Let’s start answering the...

Sigma Telecom
Nov 3, 20212 min read


SIP-487 Request Terminated - Sip Error Codes
Welcome to the VoIP class and today’s topic is the Sip-487 error code. We’ll learn the reasons for getting this error code and the ways...

Sigma Telecom
Nov 3, 20212 min read


5G Users Reached 1 Million in 140 Days!
While intensive discussions 5G continues, SK Telecom announced that they have reached 1 million 5th generation wireless network...

Sigma Telecom
Nov 3, 20212 min read


5G Wireless Revenues will reach $4.2 Billion in 2020
According to the global research and advisory research company Gartner, in worldwide aspect, 5G wireless revenues are going to reach...

Sigma Telecom
Nov 3, 20212 min read


Type of VoIP Sip Codes - Timeout - SIP 408 - SIP 504
If you are looking for a solution for the Sip Codes and errors about a VoIP Traffic, then you are on the right route. Welcome to the VoIP...

Sigma Telecom
Nov 3, 20212 min read


CDR Monitoring (Call Detail Record) Screen Details
When you are monitoring a VoIP traffic, CDR (Call Detail Record) screen is one of your best friends, helping you by showing what’s going...

Sigma Telecom
Nov 3, 20212 min read


Call Flow Diagram - Screen Detailed Analysis for VoIP
Welcome to the master class of Sigma Telecom and today we are going to take a picture of a call and try to tell you about the flow of a...

Sigma Telecom
Nov 3, 20212 min read


VoIP Disconnect Codes - Sip 404 - Sip 403 - The Reasons and Solutions
Welcome to the master class of VoIP business and today’s lecture is about Sip disconnect codes: Sip 404 Not Found and Sip 403 Forbidden....

Sigma Telecom
Nov 3, 20212 min read


VoIP Events of the Last Quarter in 2019
We are in the last quarter of the year and 2019 is almost about to finish. We already can say 2019 was very lucrative and beneficial for...

Sigma Telecom
Nov 3, 20212 min read


How VoIP Works and Devices Suitable for VoIP Technology
VoIP is simply turning the analog signals to digital and transferring those signals between sides. This is the basic definition of Voice...

Sigma Telecom
Nov 3, 20212 min read


VoLTE Subscription will Reach to 3 Billion People By 2020
There are many rumors that the VoIP industry is about to come to an end but the developments about the technology is showing something...

Sigma Telecom
Nov 3, 20212 min read


The Connectivity Index; Internet Connection Experience of The World
Carphone Warehouse made a research about the connectivity map of the world, to define which country is the most connected and has the...

Sigma Telecom
Nov 3, 20212 min read
bottom of page