August 2019

5G Users Reached 1 Million in 140 Days!

By sigmatelecom Technology, Telecom Aug 29, 2019
5G - South Korea Telecom

While intensive discussions 5G continues, SK Telecom announced that they have reached 1 million 5th generation wireless network subscribers in only 140 days. SK Telecom has generally 28 million users and now 1 million, which presents 3.5% of its subscribers, are 5 G users. According to the South Korean telecom operator, the interest in this[…]

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SIP-487 Request Terminated – Sip Error Codes

By sigmatelecom VoIP Aug 22, 2019

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 for fixing the issue. Take your seat, we are starting! What is the meaning of SIP-487 Code? If the caller (A side) closes the phone before connection, you’ll receive the[…]

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6 Critical Questions and Answers About VoIP Business

By sigmatelecom VoIP Aug 16, 2019

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 questions about Voice Over Internet Protocol in your mind. Who was the inventor of VoIP Business ? The beginning of the VoIP business started with Alen Cohen who was[…]

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The Advantages of VoIP Phone System

By sigmatelecom VoIP Aug 01, 2019

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 technology is growing and there are many more benefits you can get with VoIP. Let’s start! The Advantages of VoIP Phone System List 1. Low set-up costs and equipment[…]

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