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calls

SIP Trunking

A Session Initiation Protocol (SIP) to PSTN gateway may have trunks that are connected to different carriers. It is entirely reasonable for a SIP proxy to choose — based on factors not enumerated in this document — which carrier a call is sent to when it proxies a session setup request to the gateway. Since multiple carriers can transport a call to a particular phone number, the phone number itsel...
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What is VoIP Termination?

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 also referred to as providers or carriers. Called Party The ca...
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Artificially Inflated Traffic (AIT) – Fraudulent Traffic

Artificial Inflation of Traffic (AIT) also known as Fraudulent Traffic and Fraud Traffic  Telecom related fraud can be extremely complex to understand, particularly when two activities, such as Artificial Inflation of Traffic and Dial Through Fraud, are sometimes so similar. As a starting point, we have tried to clarify some of the questions you may have. However, please remember that it is not t...
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What does SIP mean in the telecoms industry?

The Session Initiation Protocol (SIP) is a communications protocol for signalling and controlling multimedia communication sessions. The most common applications of SIP are in Internet telephony for voice and video calls, as well as instant messaging, over Internet Protocol (IP) networks.
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What you need to know about Wi-Fi calling

EE is the first UK network to build Wi-Fi calling into your phone, but what is Wi-Fi calling and why does it matter? From 10 April, UK phone network EE's new Wi-Fi calling service will let you make calls using a Wi-Fi connection when you don't have any cellular signal. Although it's not the first Wi-Fi calling service we've seen -- Skype and Google Hangouts, for example, already let you talk u...
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Free WiFi Internet Calling, Instant Messaging (beta) and VoIP prepay calls and with your Open Telecom Virtual Numbers!

As of January 24th, 2017 all Open Telecom customers, can now benefit from Free Incoming calls and Free Roaming on your 08 or 070 numbers. "Yes", any customer of Open Telecom using 08 and 070 numbers can now not only receive calls on your 08 and 070 numbers, but you can now use your 08 and 070 number to make calls too, using the Free Zoiper Mobile VoIP app download for Android and iPhone, which you...
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EE network charges for calling 070, 08, 09, 116 and 118 numbers

From 1 July 2015, calls to 0800, 0808 and 116 numbers will be free for personal and Small Business customers to call from mobiles. Calls to numbers starting with 084, 087, 09 and 118 will be split into two parts: the Access Charge – this is the amount that is charged by EE. From 28th September 2016 this will be 50p (42p excluding VAT) per minute. the Service Charge – this is charged by ...
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Calls to 0800 freephone numbers now free on mobile phones and landlines

Freephone numbers starting with 0800 or 0808 are now free to call from mobile phones as well as landlines. The move is part of an overhaul of phone numbers and charges planned for many months by regulator Ofcom which has now come into force. It said the cost of so-called service numbers, starting with 084, 087, 118 or 09, had also been simplified. But there are warnings of confusion over th...
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