Tag: protocol – DIDcomms

STUN Servers

Posted on May 27, 2019May 29, 2019 by Daniel Kobale

What is STUN? A STUN (Session Traversal of User Datagram Protocol [UDP] Through Network Address Translators [NATs]) server allows NAT clients (i.e. IP Phones behind a firewall) to setup phone calls to a VoIP provider hosted outside of the local network. What does a STUN server do? The STUN server allows clients to find out their public address, the type of NAT they are behind and the Internet s...
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VoIP to replace ISDN

Posted on April 20, 2019May 15, 2020 by Daniel Kobale

After nearly 25 years of continuous service, ISDN channels are finally coming to their end of days. As more and more businesses migrate away from ISDN technologies we explore the reasons for the decline and the replacements on offer to businesses in more detail. So what is ISDN? ISDN stands for integrated services digital networks. It is a standard developed to cover a range of mediums like voi...
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History of VoIP (Short Version)

Posted on March 8, 2019March 8, 2019 by Daniel Kobale

History of VoIP Voice over Internet Protocol (VoIP) transmission began in 1973 as a result of the experimental Network Voice Protocol invented for the ARPANET. However, it wasn’t until 1995 that the first Internet Phone Software – Vocaltec – appeared. Vocaltec brought to market the first internet phone software called the Internet Phone. The Vocaltec software compressed the voice signal, translat...
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The History of VoIP (Full Version)

Posted on March 8, 2019March 8, 2019 by Daniel Kobale

The History of VoIP Voice over Internet Protocol, abbreviated VoIP, is a fairly recent technology. It goes by many names, including Voice Over Broadband (VoBB), Internet Telephony, IP Telephony, and broadband phone.The advent of the Internet brought with it an abundance of innovation regarding communication. Of course, there was email in the beginning, but then people started wondering whether th...
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What is MoIP?

Posted on February 20, 2019February 20, 2019 by Daniel Kobale

Mobile communications over IP. MoIP, or mobile communications over internet protocol, is the mobilization of peer-to-peer communications including chat and talk using internet protocol via standard mobile communications applications including 3G, GPRS, Wi-Fias well as Wimax. Unlike mobile VoIP, MoIP is not a VoIP program made accessible from mobile phones or a switchboard application using VoIP i...
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What is the difference between VoIP and SIP?

Posted on February 16, 2019March 8, 2019 by Daniel Kobale

The differences between VoIP and SIP. VoIP calls are sent via SIP Trunks. VoIP and SIP work in conjunction with each other! Your telecoms supplier provides the SIP trunks as this is how all your VoIP calls, fax and data are transited. You cannot make a VoIP call or send a fax to another phone line without SIP trunks. Let’s say you’re in your office; when you make a call via...
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How PSTN and ISDN switch off will impact your business

Posted on February 10, 2019February 10, 2019 by Daniel Kobale

How PSTN and ISDN switch off will impact your business. As we all know, in 2015 BT announced that they will be switching off the PSTN and ISDN networks by 2025. With this, BT will no longer accept any new orders or amendments to services applicable to any ISDN products from 2020. Once the switch-off has taken place, customers will be migrated to the IPEX (IP Exchange) core network using SIP (S...
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SIP Response Codes Session Initiation Protocol

Posted on June 16, 2018October 16, 2019 by Daniel Kobale

SIP (Session Initiation Protocol) is a signalling application layer protocol designed to create, modify, and terminate a multimedia session over the Internet Protocol. It is the most common protocol used in VoIP technology. In SIP, every network element is identified by a SIP URI (Uniform Resource Identifier) which is like an address. They are broken down as 1xx Provisional Responses, 2xx Successf...
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Resolve one-way audio issues with Port Forwarding for VoIP/SIP

Posted on April 3, 2018September 17, 2019 by Daniel Kobale

Using Port Forwarding for VoIP to overcome NAT issues. Port forwarding sometimes referred to as tunnelling, is a method of opening a port or ports in a router or firewall to allow communication from a party outside the network. Port forwarding is the act of actually forwarding a network port from one network node to another. This enables an external source to reach a port inside the private LAN...
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What is SIP Termination?

Posted on March 1, 2018May 15, 2019 by Daniel Kobale

About SIP call termination? SIP termination is a service which allows users to use VoIP technology for making outgoing voice calls to external phone networks all over the world, including public switched telephone network phone numbers, as well as mobile wireless operators. Tariffs for SIP termination service vary from one SIP termination provider to another and calling rates vary depending on...
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