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The History of VoIP (Full Version)

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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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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What are Ofcom’s rules on outbound calling times?

A question we often get asked is what Ofcom considers acceptable outbound calling times for call centres? As this is one of the common complaints people make regarding call centres, you’d have thought that this would be clearly defined and easy to establish. Perhaps surprisingly, it’s not. As this matter logically falls into the remit of the use (or misuse) of a public communications network, y...
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EE and Virgin Media fined for overcharging customers

EE and Virgin Media have been fined a total of £13.3 million for overcharging almost 500,000 mobile and broadband customers who wanted to leave their contracts early. An investigation by Ofcom found that around 400,000 EE customers ended up overpaying up to £4.3 million, while almost 82,000 Virgin Media customers were overcharged just under £2.8 million. The regulat...
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BT to be fined £42m for breaching contracts with telecoms providers

BT will be fined £42m for a serious breach of Ofcom’s rules, after the company reduced compensation payments to other telecoms providers for late installations. Ofcom investigation finds BT cut its compensation payments for delays in connecting high-speed business lines These important networks underpin the UK’s communications infrastructure BT has admitted failings, and agreed to compe...
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Facebook is set to double its London presence after acquiring enough office space to house 6,000 staff.

Facebook is set to double its London presence after acquiring enough office space to house 6,000 staff. The social network company announced the purchase of nearly 600,000 square feet of office space. Spread across two buildings in King’s Cross, the workspace will be ready by 2021. Facebook did not confirm how many new jobs will be created. The US-owned company added 800 jobs in London last year a...
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SIP Response Codes Session Initiation Protocol

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

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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