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VoIP to replace ISDN

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)

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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How PSTN and ISDN switch off will impact your business

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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BT announce the end of PSTN and ISDN

BT Openreach have announced they will be switching off their existing PSTN and ISDN network by 2025 and switching to a single IP network. Find out about the alternatives and how to be prepared. Businesses have 8 years to look for an alternative solution to their telephony and internet needs. Fortunately there are a range of affordable solutions available. What is PSTN? “The public switched tele...
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What is VoIP/SIP Call Termination?

SIP/VoIP Call Termination, what is it and how does it work! VoIP call termination is used to refer to the procedures that are used for routing telephone calls from one provider to the next provider until the call has been routed to the last telephone company and has been received by the recipient. Voice termination is another term that is used for call termination. The telephone companies are als...
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Which VoIP/SIP Codec Should You Use?

How To Describe the Quality of a SIP Trunking Call “So clear, you can hear a pin drop!” Are you old enough to remember the very successful tag line for Sprint Communications' long distance service back in the ancient 1990’s? “Can you hear me now?” Or...Did you grow up remembering the equally (if not more) successful phrase that Verizon Wireless made part of our cultural reality in the new mi...
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O2 network and the TAP gateway used for SMS texting via PSTN

Switch to OpenTAP, the UK's Leading Managed TAP Gateway, as recommended by Texecom and Honeywell. Honeywell Security Group has recently received the following email extract from the BSIA (British Security Industry Association), regarding the O2 network and the TAP gateway used for SMS texting via PSTN. The O2 centre number (07860 980480) has been unreliable for a period of time, and even thoug...
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SMS over PSTN Phone Lines (Endorsed by Texecom Ltd)

        Vodafone the last man standing? SMS over PSTN phone lines has been used in varying industries for many years, and was often sold as an additional service by alarm companies, allowing the user to be notified of alarm conditions, and open/close events. For many years there were two main players operating the service in the UK, O2 and Vodafone. In 2012 th...
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