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SIP/VoIP

Order your Free 0873 UK Number

Our Free 0873 UK Numbers come with a bonus selection of Free call management features, such as Online Account Management, Call Waiting, Voicemail to Email, Time of Day Routing, Virtual Switchboard and Call Queue, Online Billing, Prepay Top-Up, Free Call Forwarding to SIP/VoIP phone or mobile app and UK and International fixed lines and mobiles anywhere anytime! Click here to order your Free 087...
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International calls to Franzcom 084, 087 and 070 numbers from other countries

International call from other countries is now available on our 084, 087 and 070 numbers For a long time now Franzcom (previously known as Open Telecom International) has had trouble with our 084, 087 and 070 numbers not being able to be called from international phone lines. We have had a lot of customer reports about this and our investigations led us back to BT.com. In light of all the evidenc...
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Call Centre Dialler Callback Traffic is no longer allowed and you must adhere to Ofcom Regulations

Call Centre "Dialler Spam Call Traffic" of less than 18 seconds per call is not allowed under Ofcom regulations. Calls of 10 seconds or less per call, meaning the callee has to call back the caller are not permitted by Ofcom. You must meet the 3% abandoned call rate set down by Ofcom regulations. Even our carrier interconnects are now clamping down and blocking traffic on what we like to call "Di...
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Configuring the Acrobits Groundwire SIP/VoIP softphone

This topic assumes that you already have the Groundwire SIP/VoIP softphone installed. Acrobits Groundwire software phone is already installed You can find your SIP user details in your online customer account with us. Run the application and wait for Groundwire to display on your screen. Click the Settings button located at the top right corner of the phone. In Settings, selec...
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Resolve one-way audio issues with Port Forwarding for SIP/VoIP

Using Port Forwarding for VoIP to overcome NAT issues. Port forwarding, sometimes referred to as tunneling, 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 LA...
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Free Incoming VoIP Call Roaming on 084, 087 and 070 Numbers

Things just got better! with Free incoming VoIP Call Roaming on all FranzCom 084, 087 and 070 numbers! Great News! Now FranzCom customers with 084, 087 or 070 numbers can receive free incoming calls no matter where you are in the world or what country you are in. All you need is 3/4G mobile data or WiFi internet connection and there are WiFi hotspots everywhere! So if your proper landline or m...
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Global SIP Trunks and UK DID Numbers for Call Centres, PBX and IP Infrastructure

SIP Trunking with Franzcom made easy! BT is phasing out ISDN by 2025, so now would be a good time to move to SIP trunking and VoIP phones services, if you have not already considered it. With ISDN you are limited to no more than 30 channels per E1, but the a single SIP trunk from Franzcom, you have unlimited SIP channels for inbound and outbound calls. You can either just use your SIP trunk fo...
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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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Why is UDP used more for VoIP than TCP?

What are TCP and UDP? First, we need to build some vocabulary. TCP and UDP are connection protocols in use today for data traversing the Internet. Data travels across the Internet in packets. Think of them like letters. Like letters, they have an envelope with a to/from address on them. TCP and UDP are just two types of envelopes. The IP addresses are the to/from addresses. They both carry data a...
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Unblock VoIP Services in Your Country

Are you living abroad and trying to connect to your loved ones? Connect with VoIP and save the money on expensive phone calls. The best way to connect to VoIP services safely is via a VPN. Enjoy privacy on VoIP with a VPN. How can a VPN unblock VoIP services? When you connect to the internet via a VPN, the data from your computer or mobile device gets encrypted so your location and internet ac...
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