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SIP

It’s time to introduce your customers to SIP trunking as a better alternative to traditional telecoms

Moving your  communications infrastructure to the cloud is easier than they may think! Traditional telecoms solutions are no longer the most effective option for your business communications. With the increase in demand for flexible working and the need for more responsive business communications, It’s time you introduced SIP trunking, a next-generation alternative to traditional ISDN or ISDN30 -...
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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 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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VoIP Phone Handsets

We recommend a large range of VoIP Phone handsets, suitable for freelancers, home office, large office, call centres etc. We’ve listed a sample of our most popular VoIP handsets below. But if you have a specific phone in mind, just get in touch via our Contact Form and we’ll confirm if its compatible. Grandstream GXP2135  The Grandstream GXP2135 is ...
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What Is SIP Trunking & Will It Actually Save Your Business Money?

Conventional analogue phone systems have dominated business communication for a century. But it’s been clear for some time that, when it comes to modern demands, they just don’t cut the mustard. Long distance, international calls continue to cost a fortune. The fact that a traditional copper-based phone line can only handle one call at a time means you’re constantly investing in a new trunk, ev...
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Open Telecom International launches Prepay070 with Free Roaming to SIP (VoIP) divert!

We are moving into the digital age of the internet with rapidly developing technology, products and services and with that Open Telecom International want to open the doors and break down the boarders starting with 070 Free SIP Roaming Worldwide. Free roaming you say, well how does that work? With our state of the art switch and billing platform, we have the ability to offer our 070 Personal Nu...
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Open Telecom International chooses PortaBilling and PortaSwitch Platform to build cutting edge retail services

We are proud to announce that Open Telecom International Ltd, has now uses PortaBilling and PortaSwitch for all our products and services. Porta has enabled us to bring cutting edge voice products and services to our customers, along with high end quality carrier pre-select call routing and sip-voip voice and data quality which according to customer satisfaction is better than Vonage and Skype....
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